{"id":3548,"date":"2026-09-24T09:00:00","date_gmt":"2026-09-24T09:00:00","guid":{"rendered":"https:\/\/otus.ru\/journal\/?p=3548"},"modified":"2026-09-25T15:29:31","modified_gmt":"2026-09-25T15:29:31","slug":"bd-i-python-chto-nuzhno-znat","status":"publish","type":"post","link":"https:\/\/otus.ru\/journal\/bd-i-python-chto-nuzhno-znat\/","title":{"rendered":"\u0411\u0430\u0437\u044b \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 Python: \u043a\u0430\u043a\u0438\u0435 \u0421\u0423\u0411\u0414 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442 \u0438 \u0447\u0435\u043c \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u0442\u044c\u0441\u044f"},"content":{"rendered":"<p><strong>\u0411\u0430\u0437\u044b \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 Python<\/strong> &#8212; \u044d\u0442\u043e \u043d\u0435 \u0447\u0430\u0441\u0442\u044c \u044f\u0437\u044b\u043a\u0430, \u0430 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f (\u0421\u0423\u0411\u0414), \u0441 \u043a\u043e\u0442\u043e\u0440\u044b\u043c\u0438 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430 \u043d\u0430 Python \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0447\u0435\u0440\u0435\u0437 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443-\u0434\u0440\u0430\u0439\u0432\u0435\u0440: \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u0442 SQL-\u0437\u0430\u043f\u0440\u043e\u0441\u044b \u0438 \u043f\u043e\u043b\u0443\u0447\u0430\u0435\u0442 \u0441\u0442\u0440\u043e\u043a\u0438 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430. \u0421\u0423\u0411\u0414 \u0431\u044b\u0432\u0430\u0435\u0442 \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u043e\u0439 (SQLite \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0432\u043d\u0443\u0442\u0440\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430 Python \u0438 \u0445\u0440\u0430\u043d\u0438\u0442 \u0431\u0430\u0437\u0443 \u0432 \u0444\u0430\u0439\u043b\u0435) \u0438\u043b\u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u043e\u0439 (PostgreSQL, MySQL &#8212; \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u0430\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430, \u043a \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u044e\u0442\u0441\u044f \u043f\u043e \u0441\u0435\u0442\u0438). \u0421\u0430\u043c\u0430 \u0431\u0430\u0437\u0430 \u0445\u0440\u0430\u043d\u0438\u0442 \u0434\u0430\u043d\u043d\u044b\u0435 \u0438 \u0441\u043b\u0435\u0434\u0438\u0442 \u0437\u0430 \u0438\u0445 \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u044c\u044e, Python \u0438\u043c\u0438 \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u0442. \u041d\u0438\u0436\u0435 \u0440\u0430\u0437\u0431\u0435\u0440\u0435\u043c, \u043a\u0430\u043a\u0438\u0435 \u0421\u0423\u0411\u0414 \u0447\u0430\u0449\u0435 \u0432\u0441\u0435\u0433\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442 \u0441 Python, \u043a\u0430\u043a\u043e\u0439 \u0434\u0440\u0430\u0439\u0432\u0435\u0440 \u0441\u0442\u0430\u0432\u0438\u0442\u044c \u043f\u043e\u0434 \u043a\u0430\u0436\u0434\u0443\u044e, \u0447\u0435\u043c \u0434\u0440\u0430\u0439\u0432\u0435\u0440 \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u043e\u0442 ORM \u0438 \u043a\u0430\u043a \u0432\u044b\u0431\u0440\u0430\u0442\u044c \u0441\u0432\u044f\u0437\u043a\u0443 \u043f\u043e\u0434 \u0437\u0430\u0434\u0430\u0447\u0443.<\/p>\n<div class=\"oj-toc\" style=\"background:#f6f6f6;border-radius:8px;padding:14px 20px;margin:20px 0\">\n<p><strong>\u0421\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435<\/strong><\/p>\n<ol>\n<li><a href=\"#s1\">\u0422\u0440\u0438 \u0441\u043b\u043e\u044f: \u0421\u0423\u0411\u0414, \u0434\u0440\u0430\u0439\u0432\u0435\u0440, ORM<\/a><\/li>\n<li><a href=\"#s2\">\u041a\u0430\u043a\u0438\u0435 \u0421\u0423\u0411\u0414 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442 \u0441 Python \u0438 \u0447\u0435\u043c \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u0442\u044c\u0441\u044f<\/a><\/li>\n<li><a href=\"#s3\">\u041c\u0438\u043d\u0438\u043c\u0430\u043b\u044c\u043d\u044b\u0439 \u0440\u0430\u0431\u043e\u0447\u0438\u0439 \u043f\u0440\u0438\u043c\u0435\u0440: SQLite \u0447\u0435\u0440\u0435\u0437 sqlite3<\/a><\/li>\n<li><a href=\"#s4\">\u0422\u043e\u0442 \u0436\u0435 \u043a\u043e\u0434 \u0434\u043b\u044f PostgreSQL \u0447\u0435\u0440\u0435\u0437 psycopg<\/a><\/li>\n<li><a href=\"#s5\">\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u0432\u043c\u0435\u0441\u0442\u043e f-\u0441\u0442\u0440\u043e\u043a: \u0437\u0430\u0449\u0438\u0442\u0430 \u043e\u0442 SQL-\u0438\u043d\u044a\u0435\u043a\u0446\u0438\u0438<\/a><\/li>\n<li><a href=\"#s6\">SQLAlchemy: \u043e\u0434\u0438\u043d \u043a\u043e\u0434 \u0434\u043b\u044f \u0440\u0430\u0437\u043d\u044b\u0445 \u0421\u0423\u0411\u0414<\/a><\/li>\n<li><a href=\"#s7\">\u041a\u0430\u043a \u0432\u044b\u0431\u0440\u0430\u0442\u044c \u0441\u0432\u044f\u0437\u043a\u0443<\/a><\/li>\n<li><a href=\"#s8\">\u0415\u0441\u043b\u0438 \u043d\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u043e\u0441\u044c<\/a><\/li>\n<li><a href=\"#s9\">\u0412\u044b\u0432\u043e\u0434\u044b<\/a><\/li>\n<li><a href=\"#s10\">\u0413\u0434\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \/ \u0441\u0432\u044f\u0437\u044c \u0441 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u043e\u0439<\/a><\/li>\n<li><a href=\"#s11\">FAQ<\/a><\/li>\n<\/ol>\n<\/div>\n<p>\u041f\u0440\u0438\u043c\u0435\u0440\u044b \u043f\u0440\u043e\u0432\u0435\u0440\u0435\u043d\u044b 24.09.2026 \u043d\u0430 Python 3.14.7 \u0441 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430\u043c\u0438 psycopg 3.3.6, SQLAlchemy 2.0.54, PyMySQL 1.2.3 \u0438 PostgreSQL 16 \u0432 Docker.<\/p>\n<h2 id=\"s1\">\u0422\u0440\u0438 \u0441\u043b\u043e\u044f: \u0421\u0423\u0411\u0414, \u0434\u0440\u0430\u0439\u0432\u0435\u0440, ORM<\/h2>\n<p>\u042d\u0442\u0438 \u0441\u043b\u043e\u0432\u0430 \u0447\u0430\u0441\u0442\u043e \u0441\u043c\u0435\u0448\u0438\u0432\u0430\u044e\u0442, \u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u0441\u043d\u0430\u0447\u0430\u043b\u0430 \u043a\u043e\u0440\u043e\u0442\u043a\u0438\u0439 \u0441\u043b\u043e\u0432\u0430\u0440\u044c.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0421\u043b\u043e\u0439<\/th>\n<th>\u0427\u0442\u043e \u044d\u0442\u043e<\/th>\n<th>\u041f\u0440\u0438\u043c\u0435\u0440<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0421\u0423\u0411\u0414<\/td>\n<td>\u041f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0445\u0440\u0430\u043d\u0438\u0442 \u0434\u0430\u043d\u043d\u044b\u0435 \u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442 \u0437\u0430\u043f\u0440\u043e\u0441\u044b<\/td>\n<td>PostgreSQL, MySQL, SQLite<\/td>\n<\/tr>\n<tr>\n<td>\u0414\u0440\u0430\u0439\u0432\u0435\u0440<\/td>\n<td>\u0411\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 Python, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0443\u043c\u0435\u0435\u0442 \u00ab\u0433\u043e\u0432\u043e\u0440\u0438\u0442\u044c\u00bb \u0441 \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u043e\u0439 \u0421\u0423\u0411\u0414<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">sqlite3<\/code>, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code>, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">PyMySQL<\/code><\/td>\n<\/tr>\n<tr>\n<td>ORM \/ SQL-toolkit<\/td>\n<td>\u041d\u0430\u0434\u0441\u0442\u0440\u043e\u0439\u043a\u0430 \u043d\u0430\u0434 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u043e\u043c: \u043f\u0438\u0448\u0435\u0442 SQL \u0437\u0430 \u0432\u0430\u0441 \u0438\u043b\u0438 \u0434\u0430\u0435\u0442 \u0435\u0434\u0438\u043d\u044b\u0439 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 \u043a \u0440\u0430\u0437\u043d\u044b\u043c \u0421\u0423\u0411\u0414<\/td>\n<td>SQLAlchemy, Django ORM<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0426\u0435\u043f\u043e\u0447\u043a\u0430 \u043d\u0430 \u043e\u0434\u043d\u043e\u043c \u043f\u0440\u0438\u043c\u0435\u0440\u0435: \u043a\u043e\u0434 \u0432\u044b\u0437\u044b\u0432\u0430\u0435\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">cursor.execute(...)<\/code> -&gt; \u0434\u0440\u0430\u0439\u0432\u0435\u0440 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code> \u043f\u0435\u0440\u0435\u0434\u0430\u0435\u0442 \u0437\u0430\u043f\u0440\u043e\u0441 \u043f\u043e \u0441\u0435\u0442\u0438 -&gt; PostgreSQL \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442 \u0435\u0433\u043e \u0438 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u0441\u0442\u0440\u043e\u043a\u0438 -&gt; \u0434\u0440\u0430\u0439\u0432\u0435\u0440 \u043f\u0440\u0435\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u0438\u0445 \u0432 \u043a\u043e\u0440\u0442\u0435\u0436\u0438 Python.<\/p>\n<p>\u0414\u0440\u0430\u0439\u0432\u0435\u0440\u044b \u0440\u0435\u043b\u044f\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0421\u0423\u0411\u0414 \u0441\u043b\u0435\u0434\u0443\u044e\u0442 \u043e\u0431\u0449\u0435\u043c\u0443 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0443 <strong>DB-API 2.0<\/strong> (PEP 249): \u0443 \u0432\u0441\u0435\u0445 \u0435\u0441\u0442\u044c <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">connect()<\/code>, \u043a\u0443\u0440\u0441\u043e\u0440, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">execute()<\/code>, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">fetchall()<\/code>, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">commit()<\/code> \u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">rollback()<\/code>. \u041f\u043e\u044d\u0442\u043e\u043c\u0443 \u043a\u043e\u0434 \u0434\u043b\u044f SQLite \u0438 PostgreSQL \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u043f\u043e\u0447\u0442\u0438 \u043e\u0434\u0438\u043d\u0430\u043a\u043e\u0432\u043e. \u041e\u0442\u043b\u0438\u0447\u0430\u044e\u0442\u0441\u044f \u0434\u0435\u0442\u0430\u043b\u0438, \u0438 \u043e \u043d\u0438\u0445 \u043d\u0438\u0436\u0435.<\/p>\n<h2 id=\"s2\">\u041a\u0430\u043a\u0438\u0435 \u0421\u0423\u0411\u0414 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442 \u0441 Python \u0438 \u0447\u0435\u043c \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u0442\u044c\u0441\u044f<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u0421\u0423\u0411\u0414<\/th>\n<th>\u0422\u0438\u043f<\/th>\n<th>\u0414\u0440\u0430\u0439\u0432\u0435\u0440<\/th>\n<th>\u0423\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0430<\/th>\n<th>\u041a\u043e\u0433\u0434\u0430 \u0431\u0440\u0430\u0442\u044c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>SQLite<\/td>\n<td>\u0412\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u0430\u044f, \u0431\u0430\u0437\u0430 = \u043e\u0434\u0438\u043d \u0444\u0430\u0439\u043b<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">sqlite3<\/code><\/td>\n<td>\u0432\u0441\u0442\u0440\u043e\u0435\u043d \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u0443\u044e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443<\/td>\n<td>\u0443\u0447\u0435\u0431\u0430, \u0443\u0442\u0438\u043b\u0438\u0442\u044b, \u043f\u0440\u043e\u0442\u043e\u0442\u0438\u043f\u044b, \u043d\u0430\u0441\u0442\u043e\u043b\u044c\u043d\u044b\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f<\/td>\n<\/tr>\n<tr>\n<td>PostgreSQL<\/td>\n<td>\u041a\u043b\u0438\u0435\u043d\u0442-\u0441\u0435\u0440\u0432\u0435\u0440\u043d\u0430\u044f<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code> (\u0432\u0435\u0440\u0441\u0438\u044f 3)<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">pip install \"psycopg[binary]\"<\/code><\/td>\n<td>\u0432\u0435\u0431-\u0441\u0435\u0440\u0432\u0438\u0441\u044b, \u0430\u043d\u0430\u043b\u0438\u0442\u0438\u043a\u0430, \u043c\u043d\u043e\u0433\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439<\/td>\n<\/tr>\n<tr>\n<td>MySQL \/ MariaDB<\/td>\n<td>\u041a\u043b\u0438\u0435\u043d\u0442-\u0441\u0435\u0440\u0432\u0435\u0440\u043d\u0430\u044f<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">PyMySQL<\/code> (\u0447\u0438\u0441\u0442\u044b\u0439 Python) \u0438\u043b\u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">mysqlclient<\/code><\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">pip install pymysql<\/code><\/td>\n<td>\u043f\u0440\u043e\u0435\u043a\u0442\u044b, \u0433\u0434\u0435 \u0443\u0436\u0435 \u0441\u0442\u043e\u0438\u0442 MySQL<\/td>\n<\/tr>\n<tr>\n<td>MongoDB<\/td>\n<td>\u0414\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u043d\u0430\u044f (NoSQL)<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">pymongo<\/code><\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">pip install pymongo<\/code><\/td>\n<td>\u0434\u0430\u043d\u043d\u044b\u0435 \u0432 \u0432\u0438\u0434\u0435 JSON-\u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0445 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u043e\u0432<\/td>\n<\/tr>\n<tr>\n<td>Redis<\/td>\n<td>\u0425\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0435 \u00ab\u043a\u043b\u044e\u0447-\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u00bb \u0432 \u043f\u0430\u043c\u044f\u0442\u0438<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">redis<\/code><\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">pip install redis<\/code><\/td>\n<td>\u043a\u0435\u0448, \u043e\u0447\u0435\u0440\u0435\u0434\u0438, \u0441\u0447\u0435\u0442\u0447\u0438\u043a\u0438<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>MongoDB \u0438 Redis \u043d\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442 SQL \u0438 \u043d\u0435 \u0441\u043b\u0435\u0434\u0443\u044e\u0442 DB-API: \u0443 \u0438\u0445 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u043e\u0432 \u0441\u0432\u043e\u0439 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441. \u0414\u0430\u043b\u044c\u0448\u0435 \u0440\u0435\u0447\u044c \u043e \u0440\u0435\u043b\u044f\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0431\u0430\u0437\u0430\u0445, \u0441 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043e\u0431\u044b\u0447\u043d\u043e \u043d\u0430\u0447\u0438\u043d\u0430\u044e\u0442.<\/p>\n<h2 id=\"s3\">\u041c\u0438\u043d\u0438\u043c\u0430\u043b\u044c\u043d\u044b\u0439 \u0440\u0430\u0431\u043e\u0447\u0438\u0439 \u043f\u0440\u0438\u043c\u0435\u0440: SQLite \u0447\u0435\u0440\u0435\u0437 sqlite3<\/h2>\n<p>SQLite \u043d\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0438 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438, \u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u043f\u0435\u0440\u0432\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0440 &#8212; \u043d\u0430 \u043d\u0435\u0439. \u0421\u043a\u0440\u0438\u043f\u0442 \u0441\u043e\u0437\u0434\u0430\u0435\u0442 \u0444\u0430\u0439\u043b <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">school.db<\/code>, \u0442\u0430\u0431\u043b\u0438\u0446\u0443, \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u0442 \u0442\u0440\u0438 \u0441\u0442\u0440\u043e\u043a\u0438 \u0438 \u0447\u0438\u0442\u0430\u0435\u0442 \u0447\u0430\u0441\u0442\u044c \u0438\u0437 \u043d\u0438\u0445.<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\"><span style=\"color: #C678DD\">import<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">sqlite3<\/span>\n<span style=\"color: #C678DD\">from<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">contextlib<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #C678DD\">import<\/span> <span style=\"color: #E06C75\">closing<\/span>\n\n<span style=\"color: #E06C75\">students<\/span> <span style=\"color: #56B6C2\">=<\/span> <span style=\"color: #ABB2BF\">[(<\/span><span style=\"color: #98C379\">\"\u0410\u043d\u043d\u0430\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #D19A66\">91<\/span><span style=\"color: #ABB2BF\">),<\/span> <span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"\u0411\u043e\u0440\u0438\u0441\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #D19A66\">78<\/span><span style=\"color: #ABB2BF\">),<\/span> <span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"\u0412\u0435\u0440\u0430\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #D19A66\">85<\/span><span style=\"color: #ABB2BF\">)]<\/span>\n\n<span style=\"color: #C678DD\">with<\/span> <span style=\"color: #E06C75\">closing<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E06C75\">sqlite3<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">connect<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"school.db\"<\/span><span style=\"color: #ABB2BF\">))<\/span> <span style=\"color: #C678DD\">as<\/span> <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #ABB2BF\">:<\/span>\n    <span style=\"color: #C678DD\">with<\/span> <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #ABB2BF\">:<\/span>  <span style=\"color: #7F848E\"># \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u044f: commit \u043f\u0440\u0438 \u0443\u0441\u043f\u0435\u0445\u0435, rollback \u043f\u0440\u0438 \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0438<\/span>\n        <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span>\n            <span style=\"color: #98C379\">\"CREATE TABLE IF NOT EXISTS students (\"<\/span>\n            <span style=\"color: #98C379\">\" id INTEGER PRIMARY KEY,\"<\/span>\n            <span style=\"color: #98C379\">\" name TEXT NOT NULL,\"<\/span>\n            <span style=\"color: #98C379\">\" score INTEGER NOT NULL CHECK (score BETWEEN 0 AND 100))\"<\/span>\n        <span style=\"color: #ABB2BF\">)<\/span>\n        <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"DELETE FROM students\"<\/span><span style=\"color: #ABB2BF\">)<\/span>  <span style=\"color: #7F848E\"># \u0447\u0442\u043e\u0431\u044b \u043f\u043e\u0432\u0442\u043e\u0440\u043d\u044b\u0439 \u0437\u0430\u043f\u0443\u0441\u043a \u0434\u0430\u0432\u0430\u043b \u0442\u043e\u0442 \u0436\u0435 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442<\/span>\n        <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">executemany<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"INSERT INTO students (name, score) VALUES (?, ?)\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #E06C75\">students<\/span><span style=\"color: #ABB2BF\">)<\/span>\n\n    <span style=\"color: #E06C75\">rows<\/span> <span style=\"color: #56B6C2\">=<\/span> <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span>\n        <span style=\"color: #98C379\">\"SELECT name, score FROM students WHERE score &gt;= ? ORDER BY score DESC\"<\/span><span style=\"color: #ABB2BF\">,<\/span>\n        <span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #D19A66\">80<\/span><span style=\"color: #ABB2BF\">,),<\/span>\n    <span style=\"color: #ABB2BF\">)<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">fetchall<\/span><span style=\"color: #ABB2BF\">()<\/span>\n    <span style=\"color: #E5C07B\">print<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E06C75\">rows<\/span><span style=\"color: #ABB2BF\">)<\/span><\/code><\/pre>\n<p>\u0412 \u043a\u043e\u043d\u0441\u043e\u043b\u0438 \u043f\u043e\u044f\u0432\u0438\u0442\u0441\u044f \u0441\u043f\u0438\u0441\u043e\u043a \u0441\u0442\u0443\u0434\u0435\u043d\u0442\u043e\u0432 \u0441 \u0431\u0430\u043b\u043b\u043e\u043c \u043e\u0442 80:<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\">[(&#x27;\u0410\u043d\u043d\u0430&#x27;, 91), (&#x27;\u0412\u0435\u0440\u0430&#x27;, 85)]\n<\/code><\/pre>\n<p>\u0427\u0442\u043e \u0437\u0434\u0435\u0441\u044c \u0432\u0430\u0436\u043d\u043e:<\/p>\n<ul>\n<li><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">sqlite3.connect(\"school.db\")<\/code> \u043e\u0442\u043a\u0440\u044b\u0432\u0430\u0435\u0442 \u0444\u0430\u0439\u043b \u0431\u0430\u0437\u044b, \u0430 \u0435\u0441\u043b\u0438 \u0435\u0433\u043e \u043d\u0435\u0442 &#8212; \u0441\u043e\u0437\u0434\u0430\u0435\u0442. \u041f\u0443\u0442\u044c \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439, \u043e\u0442 \u0442\u0435\u043a\u0443\u0449\u0435\u0433\u043e \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0430 \u0437\u0430\u043f\u0443\u0441\u043a\u0430.<\/li>\n<li><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">with conn:<\/code> \u0432 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">sqlite3<\/code> \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0435\u0439 \u0438 <strong>\u043d\u0435 \u0437\u0430\u043a\u0440\u044b\u0432\u0430\u0435\u0442 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435<\/strong>. \u0417\u0430\u043a\u0440\u044b\u0432\u0430\u0435\u0442 \u0435\u0433\u043e <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">closing(...)<\/code>. \u042d\u0442\u043e \u0447\u0430\u0441\u0442\u0430\u044f \u043b\u043e\u0432\u0443\u0448\u043a\u0430: \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u043f\u043e\u0441\u043b\u0435 \u0431\u043b\u043e\u043a\u0430 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">with conn:<\/code> \u043e\u0441\u0442\u0430\u0435\u0442\u0441\u044f \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u043c.<\/li>\n<li><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">?<\/code> &#8212; \u043c\u0435\u0441\u0442\u043e \u0434\u043b\u044f \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430. \u0417\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043f\u0435\u0440\u0435\u0434\u0430\u044e\u0442\u0441\u044f \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e, \u043a\u043e\u0440\u0442\u0435\u0436\u0435\u043c \u0438\u043b\u0438 \u0441\u043f\u0438\u0441\u043a\u043e\u043c \u043a\u043e\u0440\u0442\u0435\u0436\u0435\u0439.<\/li>\n<li><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">CHECK<\/code> \u043d\u0435 \u0434\u0430\u0441\u0442 \u0437\u0430\u043f\u0438\u0441\u0430\u0442\u044c \u0431\u0430\u043b\u043b 150: \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u043b\u0443\u0447\u0448\u0435 \u0434\u0435\u0440\u0436\u0430\u0442\u044c \u0432 \u0441\u0430\u043c\u043e\u0439 \u0431\u0430\u0437\u0435, \u0430 \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u043a\u043e\u0434\u0435.<\/li>\n<\/ul>\n<p>\u041f\u043e\u0434\u0440\u043e\u0431\u043d\u044b\u0439 \u0440\u0430\u0437\u0431\u043e\u0440 CRUD-\u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0432 SQLite &#8212; \u0442\u0435\u043c\u0430 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u0430, \u0437\u0434\u0435\u0441\u044c \u043d\u0430\u043c \u0432\u0430\u0436\u0435\u043d \u043e\u0431\u0449\u0438\u0439 \u0448\u0430\u0431\u043b\u043e\u043d \u0440\u0430\u0431\u043e\u0442\u044b.<\/p>\n<h2 id=\"s4\">\u0422\u043e\u0442 \u0436\u0435 \u043a\u043e\u0434 \u0434\u043b\u044f PostgreSQL \u0447\u0435\u0440\u0435\u0437 psycopg<\/h2>\n<p>\u041f\u0435\u0440\u0435\u0445\u043e\u0434 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u0443\u044e \u0421\u0423\u0411\u0414 \u043c\u0435\u043d\u044f\u0435\u0442 \u0442\u0440\u0438 \u0432\u0435\u0449\u0438: \u0434\u0440\u0430\u0439\u0432\u0435\u0440, \u0441\u0442\u0440\u043e\u043a\u0443 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0438 \u0437\u043d\u0430\u043a \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430. \u041b\u043e\u0433\u0438\u043a\u0430 \u043e\u0441\u0442\u0430\u0435\u0442\u0441\u044f \u043f\u0440\u0435\u0436\u043d\u0435\u0439.<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\"><span style=\"color: #C678DD\">import<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">os<\/span>\n<span style=\"color: #C678DD\">import<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">psycopg<\/span>\n\n<span style=\"color: #7F848E\"># \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440: postgresql:\/\/app:secret@localhost:5432\/school<\/span>\n<span style=\"color: #E06C75\">dsn<\/span> <span style=\"color: #56B6C2\">=<\/span> <span style=\"color: #E06C75\">os<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">environ<\/span><span style=\"color: #ABB2BF\">[<\/span><span style=\"color: #98C379\">\"DATABASE_URL\"<\/span><span style=\"color: #ABB2BF\">]<\/span>\n<span style=\"color: #E06C75\">students<\/span> <span style=\"color: #56B6C2\">=<\/span> <span style=\"color: #ABB2BF\">[(<\/span><span style=\"color: #98C379\">\"\u0410\u043d\u043d\u0430\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #D19A66\">91<\/span><span style=\"color: #ABB2BF\">),<\/span> <span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"\u0411\u043e\u0440\u0438\u0441\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #D19A66\">78<\/span><span style=\"color: #ABB2BF\">),<\/span> <span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"\u0412\u0435\u0440\u0430\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #D19A66\">85<\/span><span style=\"color: #ABB2BF\">)]<\/span>\n\n<span style=\"color: #C678DD\">with<\/span> <span style=\"color: #E06C75\">psycopg<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">connect<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E06C75\">dsn<\/span><span style=\"color: #ABB2BF\">)<\/span> <span style=\"color: #C678DD\">as<\/span> <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #ABB2BF\">:<\/span>  <span style=\"color: #7F848E\"># \u043f\u0440\u0438 \u0432\u044b\u0445\u043e\u0434\u0435: commit (\u0438\u043b\u0438 rollback \u043f\u0440\u0438 \u043e\u0448\u0438\u0431\u043a\u0435) \u0438 \u0437\u0430\u043a\u0440\u044b\u0442\u0438\u0435<\/span>\n    <span style=\"color: #C678DD\">with<\/span> <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">cursor<\/span><span style=\"color: #ABB2BF\">()<\/span> <span style=\"color: #C678DD\">as<\/span> <span style=\"color: #E06C75\">cur<\/span><span style=\"color: #ABB2BF\">:<\/span>\n        <span style=\"color: #E06C75\">cur<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span>\n            <span style=\"color: #98C379\">\"CREATE TABLE IF NOT EXISTS students (\"<\/span>\n            <span style=\"color: #98C379\">\" id integer GENERATED ALWAYS AS IDENTITY PRIMARY KEY,\"<\/span>\n            <span style=\"color: #98C379\">\" name text NOT NULL,\"<\/span>\n            <span style=\"color: #98C379\">\" score integer NOT NULL CHECK (score BETWEEN 0 AND 100))\"<\/span>\n        <span style=\"color: #ABB2BF\">)<\/span>\n        <span style=\"color: #E06C75\">cur<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"DELETE FROM students\"<\/span><span style=\"color: #ABB2BF\">)<\/span>\n        <span style=\"color: #E06C75\">cur<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">executemany<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"INSERT INTO students (name, score) VALUES (%s, %s)\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #E06C75\">students<\/span><span style=\"color: #ABB2BF\">)<\/span>\n        <span style=\"color: #E06C75\">cur<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span>\n            <span style=\"color: #98C379\">\"SELECT name, score FROM students WHERE score &gt;= %s ORDER BY score DESC\"<\/span><span style=\"color: #ABB2BF\">,<\/span>\n            <span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #D19A66\">80<\/span><span style=\"color: #ABB2BF\">,),<\/span>\n        <span style=\"color: #ABB2BF\">)<\/span>\n        <span style=\"color: #E5C07B\">print<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E06C75\">cur<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">fetchall<\/span><span style=\"color: #ABB2BF\">())<\/span><\/code><\/pre>\n<p>\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u0442\u043e\u0442 \u0436\u0435: <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">[('\u0410\u043d\u043d\u0430', 91), ('\u0412\u0435\u0440\u0430', 85)]<\/code>. \u0421\u0440\u0430\u0432\u043d\u0438\u043c \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0435 \u0434\u0432\u0443\u0445 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u043e\u0432.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0427\u0442\u043e<\/th>\n<th><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">sqlite3<\/code><\/th>\n<th><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code> 3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0417\u043d\u0430\u043a \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">?<\/code> (\u0438\u043b\u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">:name<\/code>)<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%s<\/code> (\u0438\u043b\u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%(name)s<\/code>)<\/td>\n<\/tr>\n<tr>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">with conn:<\/code><\/td>\n<td>commit\/rollback, \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u043e\u0441\u0442\u0430\u0435\u0442\u0441\u044f \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u043c<\/td>\n<td>commit\/rollback \u0438 \u0437\u0430\u043a\u0440\u044b\u0442\u0438\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f<\/td>\n<\/tr>\n<tr>\n<td>\u0413\u0434\u0435 \u0431\u0430\u0437\u0430<\/td>\n<td>\u043b\u043e\u043a\u0430\u043b\u044c\u043d\u044b\u0439 \u0444\u0430\u0439\u043b<\/td>\n<td>\u0441\u0435\u0440\u0432\u0435\u0440 \u043f\u043e \u0430\u0434\u0440\u0435\u0441\u0443 \u0438\u0437 \u0441\u0442\u0440\u043e\u043a\u0438 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f<\/td>\n<\/tr>\n<tr>\n<td>\u0410\u0432\u0442\u043e\u0438\u043d\u043a\u0440\u0435\u043c\u0435\u043d\u0442<\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">INTEGER PRIMARY KEY<\/code><\/td>\n<td><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">GENERATED ALWAYS AS IDENTITY<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0421\u0442\u0438\u043b\u044c \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432 \u0434\u0440\u0430\u0439\u0432\u0435\u0440 \u0441\u043e\u043e\u0431\u0449\u0430\u0435\u0442 \u0441\u0430\u043c \u0447\u0435\u0440\u0435\u0437 \u0430\u0442\u0440\u0438\u0431\u0443\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">paramstyle<\/code>: \u0443 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">sqlite3<\/code> \u044d\u0442\u043e <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">qmark<\/code>, \u0443 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code> \u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">PyMySQL<\/code> &#8212; <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">pyformat<\/code>. \u0417\u043d\u0430\u0447\u0438\u0442, \u0434\u043b\u044f MySQL \u0447\u0435\u0440\u0435\u0437 PyMySQL \u0437\u0430\u043f\u0440\u043e\u0441 \u043f\u0438\u0448\u0435\u0442\u0441\u044f \u0441 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%s<\/code>, \u043a\u0430\u043a \u0432 \u043f\u0440\u0438\u043c\u0435\u0440\u0435 \u0434\u043b\u044f PostgreSQL. \u0421\u0430\u043c \u043f\u0440\u0438\u043c\u0435\u0440 \u0441 MySQL \u043d\u0435 \u043f\u0440\u043e\u0433\u043e\u043d\u044f\u043b\u0441\u044f, \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0435 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0439 \u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">with<\/code> \u0443 PyMySQL \u0441\u0432\u0435\u0440\u044f\u0439\u0442\u0435 \u0441 \u0435\u0433\u043e \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u0435\u0439.<\/p>\n<p>\u041f\u0430\u0440\u043e\u043b\u044c \u0432 \u0441\u0442\u0440\u043e\u043a\u0435 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u043d\u0435 \u043f\u0438\u0448\u0443\u0442 \u0432 \u043a\u043e\u0434: \u0435\u0433\u043e \u0431\u0435\u0440\u0443\u0442 \u0438\u0437 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f (<code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">DATABASE_URL<\/code>) \u0438\u043b\u0438 \u043c\u0435\u043d\u0435\u0434\u0436\u0435\u0440\u0430 \u0441\u0435\u043a\u0440\u0435\u0442\u043e\u0432. \u0414\u043b\u044f \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0437\u0430\u0432\u043e\u0434\u044f\u0442 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u0421\u0423\u0411\u0414 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0430 \u0441\u0432\u043e\u044e \u0431\u0430\u0437\u0443, \u0430 \u043d\u0435 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u044e\u0442\u0441\u044f \u0441\u0443\u043f\u0435\u0440\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c.<\/p>\n<h2 id=\"s5\">\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u0432\u043c\u0435\u0441\u0442\u043e f-\u0441\u0442\u0440\u043e\u043a: \u0437\u0430\u0449\u0438\u0442\u0430 \u043e\u0442 SQL-\u0438\u043d\u044a\u0435\u043a\u0446\u0438\u0438<\/h2>\n<p>\u0413\u043b\u0430\u0432\u043d\u043e\u0435 \u043f\u0440\u0430\u0432\u0438\u043b\u043e \u043b\u044e\u0431\u043e\u0433\u043e \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430: \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043e\u0442 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u043f\u0435\u0440\u0435\u0434\u0430\u044e\u0442\u0441\u044f \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430\u043c\u0438, \u0430 \u043d\u0435 \u0441\u043a\u043b\u0435\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0432 \u0441\u0442\u0440\u043e\u043a\u0443 \u0437\u0430\u043f\u0440\u043e\u0441\u0430. \u0412\u043e\u0442 \u0447\u0442\u043e \u0431\u044b\u0432\u0430\u0435\u0442, \u0435\u0441\u043b\u0438 \u0441\u043a\u043b\u0435\u0438\u0442\u044c.<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\"><span style=\"color: #C678DD\">import<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">sqlite3<\/span>\n\n<span style=\"color: #E06C75\">conn<\/span> <span style=\"color: #56B6C2\">=<\/span> <span style=\"color: #E06C75\">sqlite3<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">connect<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\":memory:\"<\/span><span style=\"color: #ABB2BF\">)<\/span>\n<span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"CREATE TABLE users (login TEXT, is_admin INTEGER)\"<\/span><span style=\"color: #ABB2BF\">)<\/span>\n<span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">executemany<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"INSERT INTO users VALUES (?, ?)\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #ABB2BF\">[(<\/span><span style=\"color: #98C379\">\"anna\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #D19A66\">0<\/span><span style=\"color: #ABB2BF\">),<\/span> <span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"root\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #D19A66\">1<\/span><span style=\"color: #ABB2BF\">)])<\/span>\n\n<span style=\"color: #E06C75\">login<\/span> <span style=\"color: #56B6C2\">=<\/span> <span style=\"color: #98C379\">\"nobody' OR '1'='1\"<\/span>  <span style=\"color: #7F848E\"># \u0441\u0442\u0440\u043e\u043a\u0430 \u043f\u0440\u0438\u0448\u043b\u0430 \u043e\u0442 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f<\/span>\n\n<span style=\"color: #E06C75\">bad<\/span> <span style=\"color: #56B6C2\">=<\/span> <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">f\"SELECT login FROM users WHERE login = '{<\/span><span style=\"color: #E06C75\">login<\/span><span style=\"color: #98C379\">}'\"<\/span><span style=\"color: #ABB2BF\">)<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">fetchall<\/span><span style=\"color: #ABB2BF\">()<\/span>\n<span style=\"color: #E5C07B\">print<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"f-\u0441\u0442\u0440\u043e\u043a\u0430:\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #E06C75\">bad<\/span><span style=\"color: #ABB2BF\">)<\/span>\n\n<span style=\"color: #E06C75\">good<\/span> <span style=\"color: #56B6C2\">=<\/span> <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"SELECT login FROM users WHERE login = ?\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E06C75\">login<\/span><span style=\"color: #ABB2BF\">,))<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">fetchall<\/span><span style=\"color: #ABB2BF\">()<\/span>\n<span style=\"color: #E5C07B\">print<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"\u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440:\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #E06C75\">good<\/span><span style=\"color: #ABB2BF\">)<\/span>\n<span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">close<\/span><span style=\"color: #ABB2BF\">()<\/span><\/code><\/pre>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\">f-\u0441\u0442\u0440\u043e\u043a\u0430: [(&#x27;anna&#x27;,), (&#x27;root&#x27;,)]\n\u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440: []\n<\/code><\/pre>\n<p>\u0421 f-\u0441\u0442\u0440\u043e\u043a\u043e\u0439 \u0443\u0441\u043b\u043e\u0432\u0438\u0435 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">OR '1'='1'<\/code> \u0441\u0442\u0430\u043b\u043e \u0447\u0430\u0441\u0442\u044c\u044e SQL, \u0438 \u0437\u0430\u043f\u0440\u043e\u0441 \u0432\u0435\u0440\u043d\u0443\u043b \u0432\u0441\u0435\u0445 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u0430. \u0421 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u043c \u0442\u0430 \u0436\u0435 \u0441\u0442\u0440\u043e\u043a\u0430 \u0438\u0449\u0435\u0442\u0441\u044f \u043a\u0430\u043a \u043e\u0431\u044b\u0447\u043d\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u043b\u043e\u0433\u0438\u043d\u0430, \u0438 \u0442\u0430\u043a\u043e\u0433\u043e \u043b\u043e\u0433\u0438\u043d\u0430 \u043d\u0435\u0442.<\/p>\n<p>\u0413\u0440\u0430\u043d\u0438\u0446\u0430 \u0443 \u044d\u0442\u043e\u0433\u043e \u043f\u0440\u0430\u0432\u0438\u043b\u0430 \u0435\u0441\u0442\u044c: \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u043c \u043f\u0435\u0440\u0435\u0434\u0430\u0435\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u0430 \u043d\u0435 \u0438\u043c\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u044b \u0438\u043b\u0438 \u0441\u0442\u043e\u043b\u0431\u0446\u0430. \u0415\u0441\u043b\u0438 \u0438\u043c\u044f \u043f\u0440\u0438\u0445\u043e\u0434\u0438\u0442 \u0438\u0437\u0432\u043d\u0435, \u0435\u0433\u043e \u0441\u0432\u0435\u0440\u044f\u044e\u0442 \u0441 \u0431\u0435\u043b\u044b\u043c \u0441\u043f\u0438\u0441\u043a\u043e\u043c \u0434\u043e\u043f\u0443\u0441\u0442\u0438\u043c\u044b\u0445 \u0438\u043c\u0435\u043d, \u0430 \u0432 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code> \u0441\u043e\u0431\u0438\u0440\u0430\u044e\u0442 \u0447\u0435\u0440\u0435\u0437 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg.sql.Identifier<\/code>. \u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0438\u0437\u0430\u0446\u0438\u044f \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u0442 \u043e\u0442 \u0438\u043d\u044a\u0435\u043a\u0446\u0438\u0438, \u043d\u043e \u043d\u0435 \u0437\u0430\u043c\u0435\u043d\u044f\u0435\u0442 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0443 \u0432\u0445\u043e\u0434\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438 \u043f\u0440\u0430\u0432\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u0432 \u0441\u0430\u043c\u043e\u0439 \u0421\u0423\u0411\u0414.<\/p>\n<h2 id=\"s6\">SQLAlchemy: \u043e\u0434\u0438\u043d \u043a\u043e\u0434 \u0434\u043b\u044f \u0440\u0430\u0437\u043d\u044b\u0445 \u0421\u0423\u0411\u0414<\/h2>\n<p>\u041a\u043e\u0433\u0434\u0430 \u043f\u0440\u043e\u0435\u043a\u0442 \u043c\u043e\u0436\u0435\u0442 \u0441\u043c\u0435\u043d\u0438\u0442\u044c \u0431\u0430\u0437\u0443 \u0438\u043b\u0438 \u0440\u0430\u0441\u0442\u0435\u0442, \u0431\u0435\u0440\u0443\u0442 <strong>SQLAlchemy<\/strong>. \u042d\u0442\u043e \u043d\u0435 \u0434\u0440\u0430\u0439\u0432\u0435\u0440: \u043e\u043d\u0430 \u0441\u0430\u043c\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">sqlite3<\/code>, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code> \u0438\u043b\u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">PyMySQL<\/code>, \u0430 \u0441\u0432\u0435\u0440\u0445\u0443 \u0434\u0430\u0435\u0442 \u0435\u0434\u0438\u043d\u044b\u0439 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441. \u0421\u0423\u0411\u0414 \u0437\u0430\u0434\u0430\u0435\u0442\u0441\u044f \u0430\u0434\u0440\u0435\u0441\u043e\u043c \u0432 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">create_engine<\/code>.<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\"><span style=\"color: #C678DD\">import<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">os<\/span>\n<span style=\"color: #C678DD\">from<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #E06C75\">sqlalchemy<\/span><span style=\"color: #ABB2BF\"> <\/span><span style=\"color: #C678DD\">import<\/span> <span style=\"color: #E06C75\">create_engine<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #E06C75\">text<\/span>\n\n<span style=\"color: #E06C75\">url<\/span> <span style=\"color: #56B6C2\">=<\/span> <span style=\"color: #E06C75\">os<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">environ<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">get<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"DATABASE_URL\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #98C379\">\"sqlite+pysqlite:\/\/\/:memory:\"<\/span><span style=\"color: #ABB2BF\">)<\/span>\n<span style=\"color: #E06C75\">engine<\/span> <span style=\"color: #56B6C2\">=<\/span> <span style=\"color: #E06C75\">create_engine<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E06C75\">url<\/span><span style=\"color: #ABB2BF\">)<\/span>\n\n<span style=\"color: #C678DD\">with<\/span> <span style=\"color: #E06C75\">engine<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">begin<\/span><span style=\"color: #ABB2BF\">()<\/span> <span style=\"color: #C678DD\">as<\/span> <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #ABB2BF\">:<\/span>  <span style=\"color: #7F848E\"># \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u044f: commit \u043f\u0440\u0438 \u0443\u0441\u043f\u0435\u0445\u0435, rollback \u043f\u0440\u0438 \u043e\u0448\u0438\u0431\u043a\u0435<\/span>\n    <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E06C75\">text<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"CREATE TABLE IF NOT EXISTS courses (title VARCHAR(100) NOT NULL, hours INTEGER NOT NULL)\"<\/span><span style=\"color: #ABB2BF\">))<\/span>\n    <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E06C75\">text<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"DELETE FROM courses\"<\/span><span style=\"color: #ABB2BF\">))<\/span>\n    <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span>\n        <span style=\"color: #E06C75\">text<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"INSERT INTO courses (title, hours) VALUES (:title, :hours)\"<\/span><span style=\"color: #ABB2BF\">),<\/span>\n        <span style=\"color: #ABB2BF\">[{<\/span><span style=\"color: #98C379\">\"title\"<\/span><span style=\"color: #ABB2BF\">:<\/span> <span style=\"color: #98C379\">\"Python\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #98C379\">\"hours\"<\/span><span style=\"color: #ABB2BF\">:<\/span> <span style=\"color: #D19A66\">120<\/span><span style=\"color: #ABB2BF\">},<\/span> <span style=\"color: #ABB2BF\">{<\/span><span style=\"color: #98C379\">\"title\"<\/span><span style=\"color: #ABB2BF\">:<\/span> <span style=\"color: #98C379\">\"SQL\"<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #98C379\">\"hours\"<\/span><span style=\"color: #ABB2BF\">:<\/span> <span style=\"color: #D19A66\">40<\/span><span style=\"color: #ABB2BF\">}],<\/span>\n    <span style=\"color: #ABB2BF\">)<\/span>\n    <span style=\"color: #E06C75\">rows<\/span> <span style=\"color: #56B6C2\">=<\/span> <span style=\"color: #E06C75\">conn<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">execute<\/span><span style=\"color: #ABB2BF\">(<\/span>\n        <span style=\"color: #E06C75\">text<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #98C379\">\"SELECT title, hours FROM courses WHERE hours &gt; :min ORDER BY hours\"<\/span><span style=\"color: #ABB2BF\">),<\/span>\n        <span style=\"color: #ABB2BF\">{<\/span><span style=\"color: #98C379\">\"min\"<\/span><span style=\"color: #ABB2BF\">:<\/span> <span style=\"color: #D19A66\">30<\/span><span style=\"color: #ABB2BF\">},<\/span>\n    <span style=\"color: #ABB2BF\">)<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">all<\/span><span style=\"color: #ABB2BF\">()<\/span>\n\n<span style=\"color: #E5C07B\">print<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E06C75\">engine<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">dialect<\/span><span style=\"color: #56B6C2\">.<\/span><span style=\"color: #E06C75\">name<\/span><span style=\"color: #ABB2BF\">,<\/span> <span style=\"color: #ABB2BF\">[<\/span><span style=\"color: #E5C07B\">tuple<\/span><span style=\"color: #ABB2BF\">(<\/span><span style=\"color: #E06C75\">r<\/span><span style=\"color: #ABB2BF\">)<\/span> <span style=\"color: #C678DD\">for<\/span> <span style=\"color: #E06C75\">r<\/span> <span style=\"color: #56B6C2\">in<\/span> <span style=\"color: #E06C75\">rows<\/span><span style=\"color: #ABB2BF\">])<\/span><\/code><\/pre>\n<p>\u0411\u0435\u0437 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0441\u043a\u0440\u0438\u043f\u0442 \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0441 SQLite \u0432 \u043f\u0430\u043c\u044f\u0442\u0438, \u0430 \u0441 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">DATABASE_URL=postgresql+psycopg:\/\/app:secret@localhost:5432\/school<\/code> &#8212; \u0441 PostgreSQL. \u041a\u043e\u0434 \u043d\u0435 \u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f, \u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u0435\u0440\u0432\u043e\u0435 \u0441\u043b\u043e\u0432\u043e \u0432\u044b\u0432\u043e\u0434\u0430:<\/p>\n<pre style=\"background:#282c34;color:#abb2bf;border-radius:8px;padding:16px 20px;margin:20px 0;overflow-x:auto;font-size:14px;line-height:1.55;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\"><code style=\"background:none\">sqlite [(&#x27;SQL&#x27;, 40), (&#x27;Python&#x27;, 120)]\npostgresql [(&#x27;SQL&#x27;, 40), (&#x27;Python&#x27;, 120)]\n<\/code><\/pre>\n<p>\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u0437\u0434\u0435\u0441\u044c \u043f\u0438\u0448\u0443\u0442\u0441\u044f \u043a\u0430\u043a <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">:name<\/code> \u0434\u043b\u044f \u043b\u044e\u0431\u043e\u0439 \u0421\u0423\u0411\u0414, SQLAlchemy \u0441\u0430\u043c\u0430 \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0438\u0442 \u0438\u0445 \u0432 \u0441\u0442\u0438\u043b\u044c \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430. \u0414\u043b\u044f MySQL \u0430\u0434\u0440\u0435\u0441 \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u043a\u0430\u043a <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">mysql+pymysql:\/\/user:password@host\/db<\/code>. \u0415\u0434\u0438\u043d\u044b\u0439 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 \u043d\u0435 \u0441\u0442\u0438\u0440\u0430\u0435\u0442 \u0440\u0430\u0437\u043b\u0438\u0447\u0438\u044f \u0434\u0438\u0430\u043b\u0435\u043a\u0442\u043e\u0432: \u0442\u0438\u043f\u044b, \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0438 \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0435 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">ORDER BY<\/code> \u0441 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">NULL<\/code> \u0443 \u0421\u0423\u0411\u0414 \u0440\u0430\u0437\u043d\u044b\u0435. \u0420\u0430\u0431\u043e\u0442\u0430 \u0441 \u043c\u043e\u0434\u0435\u043b\u044f\u043c\u0438-\u043a\u043b\u0430\u0441\u0441\u0430\u043c\u0438 (ORM) \u0440\u0430\u0437\u043e\u0431\u0440\u0430\u043d\u0430 \u0432 \u0441\u0442\u0430\u0442\u044c\u0435 <a href=\"\/journal\/vvedenie-v-sqlalchemy\/\">\u00ab\u0412\u0432\u0435\u0434\u0435\u043d\u0438\u0435 \u0432 SQLAlchemy\u00bb<\/a>.<\/p>\n<h2 id=\"s7\">\u041a\u0430\u043a \u0432\u044b\u0431\u0440\u0430\u0442\u044c \u0441\u0432\u044f\u0437\u043a\u0443<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u0417\u0430\u0434\u0430\u0447\u0430<\/th>\n<th>\u0427\u0442\u043e \u0432\u0437\u044f\u0442\u044c<\/th>\n<th>\u041a\u043e\u0433\u0434\u0430 \u0438\u043d\u0430\u0447\u0435<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0423\u0447\u0435\u0431\u043d\u044b\u0439 \u043f\u0440\u043e\u0435\u043a\u0442, \u0441\u043a\u0440\u0438\u043f\u0442, \u0431\u043e\u0442 \u0434\u043b\u044f \u0441\u0435\u0431\u044f<\/td>\n<td>SQLite + <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">sqlite3<\/code><\/td>\n<td>\u043c\u043d\u043e\u0433\u043e \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 \u0437\u0430\u043f\u0438\u0441\u0435\u0439 &#8212; \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u0438\u0442\u044c \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440<\/td>\n<\/tr>\n<tr>\n<td>\u0412\u0435\u0431-\u0441\u0435\u0440\u0432\u0438\u0441, API, \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439<\/td>\n<td>PostgreSQL + <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code><\/td>\n<td>\u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f \u0443\u0436\u0435 \u0436\u0438\u0432\u0435\u0442 \u043d\u0430 MySQL &#8212; PyMySQL \u0438\u043b\u0438 mysqlclient<\/td>\n<\/tr>\n<tr>\n<td>\u041f\u0440\u043e\u0435\u043a\u0442 \u043d\u0430 Django<\/td>\n<td>\u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u044b\u0439 Django ORM<\/td>\n<td>\u0441\u043b\u043e\u0436\u043d\u0430\u044f \u0430\u043d\u0430\u043b\u0438\u0442\u0438\u043a\u0430 &#8212; \u0441\u044b\u0440\u043e\u0439 SQL \u0440\u044f\u0434\u043e\u043c \u0441 ORM<\/td>\n<\/tr>\n<tr>\n<td>\u041d\u0443\u0436\u043d\u043e \u043d\u0435 \u043f\u0440\u0438\u0432\u044f\u0437\u044b\u0432\u0430\u0442\u044c\u0441\u044f \u043a \u0421\u0423\u0411\u0414<\/td>\n<td>SQLAlchemy \u043f\u043e\u0432\u0435\u0440\u0445 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430<\/td>\n<td>\u043c\u0430\u043b\u0435\u043d\u044c\u043a\u0438\u0439 \u0441\u043a\u0440\u0438\u043f\u0442 &#8212; \u0445\u0432\u0430\u0442\u0438\u0442 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 \u043d\u0430\u043f\u0440\u044f\u043c\u0443\u044e<\/td>\n<\/tr>\n<tr>\n<td>\u041a\u0435\u0448, \u0441\u0435\u0441\u0441\u0438\u0438, \u0441\u0447\u0435\u0442\u0447\u0438\u043a\u0438<\/td>\n<td>Redis + <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">redis<\/code><\/td>\n<td>\u0434\u0430\u043d\u043d\u044b\u0435 \u043d\u0443\u0436\u043d\u043e \u0445\u0440\u0430\u043d\u0438\u0442\u044c \u0434\u043e\u043b\u0433\u043e \u0438 \u0441\u0432\u044f\u0437\u043d\u043e &#8212; \u0440\u0435\u043b\u044f\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0431\u0430\u0437\u0430<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u041d\u0430\u0447\u0438\u043d\u0430\u0442\u044c \u0441\u0442\u043e\u0438\u0442 \u0441 SQLite \u0438 \u0447\u0438\u0441\u0442\u043e\u0433\u043e SQL: \u0442\u0430\u043a \u0432\u0438\u0434\u043d\u043e, \u0447\u0442\u043e \u043d\u0430 \u0441\u0430\u043c\u043e\u043c \u0434\u0435\u043b\u0435 \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0432 \u0431\u0430\u0437\u0435. ORM \u0443\u0434\u043e\u0431\u043d\u0435\u0435, \u043a\u043e\u0433\u0434\u0430 \u043e\u0441\u043d\u043e\u0432\u044b SQL \u0438 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0439 \u0443\u0436\u0435 \u043f\u043e\u043d\u044f\u0442\u043d\u044b.<\/p>\n<h2 id=\"s8\">\u0415\u0441\u043b\u0438 \u043d\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u043e\u0441\u044c<\/h2>\n<ul>\n<li><strong><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">ModuleNotFoundError: No module named 'psycopg2'<\/code>.<\/strong> \u0423\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d \u0438\u043b\u0438 \u0438\u0449\u0435\u0442\u0441\u044f \u043d\u0435 \u0442\u043e\u0442 \u043f\u0430\u043a\u0435\u0442: <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg2<\/code> \u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code> (\u0432\u0435\u0440\u0441\u0438\u044f 3) &#8212; \u0440\u0430\u0437\u043d\u044b\u0435 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438. \u0414\u043b\u044f \u043d\u043e\u0432\u044b\u0445 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432 \u0441\u0442\u0430\u0432\u044f\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code> \u0438 \u0438\u043c\u043f\u043e\u0440\u0442\u0438\u0440\u0443\u044e\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code>: \u0434\u043b\u044f \u0443\u0447\u0435\u0431\u044b \u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u043e\u0449\u0435 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">pip install \"psycopg[binary]\"<\/code> (\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0432\u043d\u0443\u0442\u0440\u0438 \u043f\u0430\u043a\u0435\u0442\u0430), \u0434\u043b\u044f production \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u044f psycopg \u043f\u0440\u0435\u0434\u043f\u043e\u0447\u0438\u0442\u0430\u0435\u0442 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u0443\u044e \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0443 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg[c]<\/code>, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0443\u044e \u0441 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u043c\u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">libpq<\/code> \u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">libssl<\/code>, \u0447\u0442\u043e\u0431\u044b \u043e\u043d\u0438 \u043e\u0431\u043d\u043e\u0432\u043b\u044f\u043b\u0438\u0441\u044c \u0432\u043c\u0435\u0441\u0442\u0435 \u0441 \u0441\u0438\u0441\u0442\u0435\u043c\u043e\u0439.<\/li>\n<li><strong><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg.OperationalError: ... Connection refused<\/code>.<\/strong> \u0421\u0435\u0440\u0432\u0435\u0440 \u043d\u0435 \u0437\u0430\u043f\u0443\u0449\u0435\u043d \u0438\u043b\u0438 \u0441\u043b\u0443\u0448\u0430\u0435\u0442 \u0434\u0440\u0443\u0433\u043e\u0439 \u043f\u043e\u0440\u0442. \u041f\u0440\u043e\u0432\u0435\u0440\u044c\u0442\u0435 \u0445\u043e\u0441\u0442 \u0438 \u043f\u043e\u0440\u0442 \u0432 \u0441\u0442\u0440\u043e\u043a\u0435 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0438 \u0447\u0442\u043e \u0421\u0423\u0411\u0414 \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442.<\/li>\n<li><strong><code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">sqlite3.OperationalError: no such table: students<\/code>.<\/strong> \u0421\u043a\u0440\u0438\u043f\u0442 \u043e\u0442\u043a\u0440\u044b\u043b \u0434\u0440\u0443\u0433\u043e\u0439 \u0444\u0430\u0439\u043b: \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043f\u0443\u0442\u044c \u0441\u0447\u0438\u0442\u0430\u0435\u0442\u0441\u044f \u043e\u0442 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0430 \u0437\u0430\u043f\u0443\u0441\u043a\u0430, \u0430 \u043d\u0435\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u0444\u0430\u0439\u043b <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">sqlite3<\/code> \u043c\u043e\u043b\u0447\u0430 \u0441\u043e\u0437\u0434\u0430\u0435\u0442 \u043f\u0443\u0441\u0442\u044b\u043c. \u0418\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u0430\u0431\u0441\u043e\u043b\u044e\u0442\u043d\u044b\u0439 \u043f\u0443\u0442\u044c. \u0423 \u0431\u0430\u0437\u044b <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">:memory:<\/code> \u0442\u0430\u0431\u043b\u0438\u0446\u044b \u0436\u0438\u0432\u0443\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043e \u0437\u0430\u043a\u0440\u044b\u0442\u0438\u044f \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f.<\/li>\n<li><strong>\u0414\u0430\u043d\u043d\u044b\u0435 \u0437\u0430\u043f\u0438\u0441\u0430\u043b\u0438\u0441\u044c, \u0430 \u043f\u043e\u0441\u043b\u0435 \u043f\u0435\u0440\u0435\u0437\u0430\u043f\u0443\u0441\u043a\u0430 \u0438\u0445 \u043d\u0435\u0442.<\/strong> \u041d\u0435 \u0431\u044b\u043b\u043e <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">commit<\/code>. \u0418\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">with conn:<\/code> \u0438\u043b\u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">engine.begin()<\/code>, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0444\u0438\u043a\u0441\u0438\u0440\u0443\u044e\u0442 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u044e \u0441\u0430\u043c\u0438.<\/li>\n<\/ul>\n<h2 id=\"s9\">\u0412\u044b\u0432\u043e\u0434\u044b<\/h2>\n<ul>\n<li>\u0411\u0430\u0437\u0430 \u0434\u0430\u043d\u043d\u044b\u0445 \u0434\u043b\u044f Python &#8212; \u0432\u043d\u0435\u0448\u043d\u044f\u044f \u0421\u0423\u0411\u0414, \u0430 \u0440\u0430\u0431\u043e\u0442\u0430 \u0441 \u043d\u0435\u0439 \u0438\u0434\u0435\u0442 \u0447\u0435\u0440\u0435\u0437 \u0434\u0440\u0430\u0439\u0432\u0435\u0440; ORM &#8212; \u043d\u0435\u043e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c\u043d\u0430\u044f \u043d\u0430\u0434\u0441\u0442\u0440\u043e\u0439\u043a\u0430 \u043d\u0430\u0434 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u043e\u043c.<\/li>\n<li>\u0414\u043b\u044f SQLite \u0434\u0440\u0430\u0439\u0432\u0435\u0440 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">sqlite3<\/code> \u0432\u0441\u0442\u0440\u043e\u0435\u043d \u0432 Python, \u0434\u043b\u044f PostgreSQL \u0431\u0435\u0440\u0443\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code>, \u0434\u043b\u044f MySQL &#8212; <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">PyMySQL<\/code> \u0438\u043b\u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">mysqlclient<\/code>.<\/li>\n<li>\u0420\u0435\u043b\u044f\u0446\u0438\u043e\u043d\u043d\u044b\u0435 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u044b \u0441\u043b\u0435\u0434\u0443\u044e\u0442 DB-API 2.0, \u043d\u043e \u043e\u0442\u043b\u0438\u0447\u0430\u044e\u0442\u0441\u044f \u0437\u043d\u0430\u043a\u043e\u043c \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430 (<code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">?<\/code> \u0438\u043b\u0438 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">%s<\/code>) \u0438 \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0435\u043c <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">with<\/code>.<\/li>\n<li>\u0417\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0432\u0441\u0435\u0433\u0434\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u044e\u0442\u0441\u044f \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430\u043c\u0438, \u0430 \u043d\u0435 f-\u0441\u0442\u0440\u043e\u043a\u043e\u0439: \u044d\u0442\u043e \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u0442 \u043e\u0442 SQL-\u0438\u043d\u044a\u0435\u043a\u0446\u0438\u0438.<\/li>\n<li>SQLAlchemy \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043c\u0435\u043d\u044f\u0442\u044c \u0421\u0423\u0411\u0414 \u0441\u043c\u0435\u043d\u043e\u0439 \u0430\u0434\u0440\u0435\u0441\u0430, \u043d\u043e \u043d\u0435 \u043e\u0442\u043c\u0435\u043d\u044f\u0435\u0442 \u0440\u0430\u0437\u043b\u0438\u0447\u0438\u0439 \u0434\u0438\u0430\u043b\u0435\u043a\u0442\u043e\u0432.<\/li>\n<\/ul>\n<h2 id=\"s10\">\u0413\u0434\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \/ \u0441\u0432\u044f\u0437\u044c \u0441 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u043e\u0439<\/h2>\n<div class=\"oj-cta\" style=\"background:#fbf4e4;border-left:4px solid #c9962b;border-radius:8px;padding:16px 20px;margin:24px 0\">\n<p style=\"margin:0 0 8px\"><strong>\u041e\u0441\u0432\u043e\u0439\u0442\u0435 \u0442\u0435\u043c\u0443 \u043d\u0430 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0435<\/strong><\/p>\n<p>\u0420\u0430\u0431\u043e\u0442\u0430 \u0441 \u0431\u0430\u0437\u043e\u0439 \u043d\u0443\u0436\u043d\u0430 \u043f\u043e\u0447\u0442\u0438 \u0432 \u043b\u044e\u0431\u043e\u043c Python-\u043f\u0440\u043e\u0435\u043a\u0442\u0435: Telegram-\u0431\u043e\u0442 \u0445\u0440\u0430\u043d\u0438\u0442 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439, \u0432\u0435\u0431-\u0441\u0435\u0440\u0432\u0438\u0441 &#8212; \u0437\u0430\u043a\u0430\u0437\u044b, \u043f\u0430\u0440\u0441\u0435\u0440 &#8212; \u0441\u043e\u0431\u0440\u0430\u043d\u043d\u044b\u0435 \u0434\u0430\u043d\u043d\u044b\u0435. \u041d\u0430\u0432\u044b\u043a \u0441\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0438\u0437 \u0442\u0440\u0435\u0445 \u0447\u0430\u0441\u0442\u0435\u0439: SQL-\u0437\u0430\u043f\u0440\u043e\u0441\u044b, \u0440\u0430\u0431\u043e\u0442\u0430 \u0441 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u043e\u043c \u0438 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u044f\u043c\u0438, \u0432\u044b\u0431\u043e\u0440 \u0421\u0423\u0411\u0414 \u043f\u043e\u0434 \u0437\u0430\u0434\u0430\u0447\u0443. \u0421\u0438\u0441\u0442\u0435\u043c\u043d\u043e \u043f\u0440\u043e\u0439\u0442\u0438 \u043e\u0441\u043d\u043e\u0432\u044b \u044f\u0437\u044b\u043a\u0430 \u0432\u043c\u0435\u0441\u0442\u0435 \u0441 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0434\u0430\u043d\u043d\u044b\u0445 \u043c\u043e\u0436\u043d\u043e \u043d\u0430 \u043a\u0443\u0440\u0441\u0435 <a href=\"https:\/\/otus.ru\/lessons\/python-basic\/?int_article=bd-i-python-chto-nuzhno-znat&amp;int_place=article&amp;int_variant=v1\">\u00abPython-\u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a. \u0411\u0430\u0437\u043e\u0432\u044b\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c\u00bb<\/a>. \u041f\u043e\u043f\u0440\u043e\u0431\u043e\u0432\u0430\u0442\u044c \u0444\u043e\u0440\u043c\u0430\u0442 \u0438 \u0440\u0430\u0437\u043e\u0431\u0440\u0430\u0442\u044c \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0435 \u0442\u0435\u043c\u044b \u0441 \u043f\u0440\u0435\u043f\u043e\u0434\u0430\u0432\u0430\u0442\u0435\u043b\u044f\u043c\u0438 \u043f\u043e\u043c\u043e\u0433\u0443\u0442 \u0431\u0435\u0441\u043f\u043b\u0430\u0442\u043d\u044b\u0435 <a href=\"https:\/\/otus.ru\/events\/?int_article=bd-i-python-chto-nuzhno-znat&amp;int_place=article&amp;int_variant=v1\">\u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0435 \u0443\u0440\u043e\u043a\u0438 Otus<\/a>.<\/p>\n<\/div>\n<h2 id=\"s11\">FAQ<\/h2>\n<p><strong>\u041c\u043e\u0436\u043d\u043e \u043b\u0438 \u0445\u0440\u0430\u043d\u0438\u0442\u044c \u0434\u0430\u043d\u043d\u044b\u0435 \u043f\u0440\u043e\u0441\u0442\u043e \u0432 JSON-\u0444\u0430\u0439\u043b\u0435 \u0432\u043c\u0435\u0441\u0442\u043e \u0431\u0430\u0437\u044b?<\/strong><br \/>\n\u0414\u043b\u044f \u043d\u0435\u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043a &#8212; \u0434\u0430. \u041d\u043e JSON-\u0444\u0430\u0439\u043b \u043d\u0435 \u0434\u0430\u0435\u0442 \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u0437\u0430\u043f\u0438\u0441\u0438, \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0439, \u0438\u043d\u0434\u0435\u043a\u0441\u043e\u0432 \u0438 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0439, \u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u043f\u0440\u0438 \u0440\u043e\u0441\u0442\u0435 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438\u043b\u0438 \u0447\u0438\u0441\u043b\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0435\u0433\u043e \u0437\u0430\u043c\u0435\u043d\u044f\u044e\u0442 \u043d\u0430 SQLite \u0438\u043b\u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u0443\u044e \u0421\u0423\u0411\u0414.<\/p>\n<p><strong>\u0427\u0435\u043c psycopg \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u043e\u0442 psycopg2?<\/strong><br \/>\n\u042d\u0442\u043e \u0434\u0432\u0435 \u0440\u0430\u0437\u043d\u044b\u0435 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Psycopg (psycopg2 \u0441\u043e\u0437\u0434\u0430\u043b \u0424\u0435\u0434\u0435\u0440\u0438\u043a\u043e \u0414\u0438 \u0413\u0440\u0435\u0433\u043e\u0440\u0438\u043e, psycopg 3 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u0435\u0433\u043e \u043d\u044b\u043d\u0435\u0448\u043d\u0438\u043c \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u043c \u0414\u0430\u043d\u0438\u044d\u043b\u0435 \u0412\u0430\u0440\u0440\u0430\u0446\u0446\u043e): <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code> &#8212; \u0442\u0440\u0435\u0442\u044c\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u0441 \u043d\u043e\u0432\u044b\u043c API (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">with connect()<\/code> \u0437\u0430\u043a\u0440\u044b\u0432\u0430\u0435\u0442 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435), <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg2<\/code> &#8212; \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0430\u044f, \u0435\u0435 \u0434\u043e \u0441\u0438\u0445 \u043f\u043e\u0440 \u043c\u043d\u043e\u0433\u043e \u0432 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u043f\u0440\u043e\u0435\u043a\u0442\u0430\u0445. \u0414\u043b\u044f \u043d\u043e\u0432\u043e\u0433\u043e \u043a\u043e\u0434\u0430 \u043e\u0431\u044b\u0447\u043d\u043e \u0431\u0435\u0440\u0443\u0442 <code style=\"background:#eef0f3;color:#24292f;border-radius:4px;padding:1px 5px;font-size:0.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace\">psycopg<\/code>.<\/p>\n<p><strong>\u041d\u0443\u0436\u043d\u043e \u043b\u0438 \u0437\u043d\u0430\u0442\u044c SQL, \u0435\u0441\u043b\u0438 \u0435\u0441\u0442\u044c ORM?<\/strong><br \/>\n\u0414\u0430. ORM \u0433\u0435\u043d\u0435\u0440\u0438\u0440\u0443\u0435\u0442 SQL, \u0438 \u0447\u0442\u043e\u0431\u044b \u043f\u043e\u043d\u0438\u043c\u0430\u0442\u044c, \u043f\u043e\u0447\u0435\u043c\u0443 \u0437\u0430\u043f\u0440\u043e\u0441 \u043c\u0435\u0434\u043b\u0435\u043d\u043d\u044b\u0439 \u0438\u043b\u0438 \u0432\u0435\u0440\u043d\u0443\u043b \u043d\u0435 \u0442\u043e, \u043d\u0443\u0436\u043d\u043e \u0447\u0438\u0442\u0430\u0442\u044c \u044d\u0442\u043e\u0442 SQL \u0438 \u043f\u043b\u0430\u043d\u044b \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0411\u0430\u0437\u044b \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 Python &#8212; \u044d\u0442\u043e \u043d\u0435 \u0447\u0430\u0441\u0442\u044c \u044f\u0437\u044b\u043a\u0430, \u0430 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f (\u0421\u0423\u0411\u0414), \u0441 \u043a\u043e\u0442\u043e\u0440\u044b\u043c\u0438 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430 \u043d\u0430 Python \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0447\u0435\u0440\u0435\u0437 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443-\u0434\u0440\u0430\u0439\u0432\u0435\u0440: \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u0442 SQL-\u0437\u0430\u043f\u0440\u043e\u0441\u044b \u0438 \u043f\u043e\u043b\u0443\u0447\u0430\u0435\u0442 \u0441\u0442\u0440\u043e\u043a\u0438 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430. \u0421\u0423\u0411\u0414 \u0431\u044b\u0432\u0430\u0435\u0442 \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u043e\u0439 (SQLite \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0432\u043d\u0443\u0442\u0440\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430 Python \u0438 \u0445\u0440\u0430\u043d\u0438\u0442 \u0431\u0430\u0437\u0443 \u0432 \u0444\u0430\u0439\u043b\u0435) \u0438\u043b\u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u043e\u0439 (PostgreSQL, MySQL &#8212; \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u0430\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430, \u043a \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u044e\u0442\u0441\u044f \u043f\u043e \u0441\u0435\u0442\u0438). \u0421\u0430\u043c\u0430 \u0431\u0430\u0437\u0430 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":3550,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[27],"class_list":["post-3548","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-polza","tag-python"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0427\u0442\u043e \u0442\u0430\u043a\u043e\u0435 \u0431\u0430\u0437\u044b \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 Python: \u043a\u0430\u043a\u0438\u0435 \u0421\u0423\u0411\u0414 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442, \u0447\u0435\u043c \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u0442\u044c\u0441\u044f (sqlite3, psycopg, PyMySQL, SQLAlchemy), \u043a\u0430\u043a \u0432\u044b\u0431\u0440\u0430\u0442\u044c \u0438 \u043d\u0435 \u0434\u043e\u043f\u0443\u0441\u0442\u0438\u0442\u044c SQL-\u0438\u043d\u044a\u0435\u043a\u0446\u0438\u044e.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"A. 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