{"id":41466,"date":"2022-07-13T06:31:40","date_gmt":"2023-09-19T03:48:16","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8pandas%e8%bf%9b%e8%a1%8cpostgresql%e7%9a%84%e8%af%bb%e5%86%99\/"},"modified":"2024-01-15T10:59:36","modified_gmt":"2024-01-15T02:59:36","slug":"%e4%bd%bf%e7%94%a8pandas%e8%bf%9b%e8%a1%8cpostgresql%e7%9a%84%e8%af%bb%e5%86%99","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8pandas%e8%bf%9b%e8%a1%8cpostgresql%e7%9a%84%e8%af%bb%e5%86%99\/","title":{"rendered":"\u4f7f\u7528pandas\u8fdb\u884cPostgreSQL\u7684\u8bfb\u5199"},"content":{"rendered":"

\u5728Arch Linux\u4e0a\u5b89\u88c5\u6240\u9700\u7684\u5e93\u6587\u4ef6\u3002<\/h2>\n
sudo <\/span>pacman -S<\/span> python-sqlalchemy\r\n<\/code><\/pre>\n
\u521b\u5efa\u6570\u636e\u5e93<\/h2>\n
#! \/usr\/bin\/python\r\n#\r\n#\tpostgre_create.py\r\n#\r\n#\t\t\t\t\tMar\/05\/2023\r\n# ------------------------------------------------------------------\r\n<\/span>import<\/span> sys<\/span>\r\nimport<\/span> pandas<\/span> as<\/span> pd<\/span>\r\n#\r\n<\/span>from<\/span> sqlalchemy<\/span> import<\/span> create_engine<\/span>\r\n# ------------------------------------------------------------------\r\n<\/span>sys<\/span>.<\/span>stderr<\/span>.<\/span>write<\/span>(<\/span>\"<\/span>*** \u958b\u59cb ***<\/span>\\n<\/span>\"<\/span>)<\/span>\r\n#\r\n<\/span>df<\/span> =<\/span> pd<\/span>.<\/span>DataFrame<\/span>([<\/span>\r\n\t\t[<\/span>\"<\/span>t1271<\/span>\"<\/span>,<\/span>\"<\/span>\u5343\u8449<\/span>\"<\/span>,<\/span>58471<\/span>,<\/span>\"<\/span>2003-9-25<\/span>\"<\/span>],<\/span>\r\n\t\t[<\/span>\"<\/span>t1272<\/span>\"<\/span>,<\/span>\"<\/span>\u52dd\u6d66<\/span>\"<\/span>,<\/span>49523<\/span>,<\/span>\"<\/span>2003-3-16<\/span>\"<\/span>],<\/span>\r\n\t\t[<\/span>\"<\/span>t1273<\/span>\"<\/span>,<\/span>\"<\/span>\u5e02\u539f<\/span>\"<\/span>,<\/span>27461<\/span>,<\/span>\"<\/span>2003-6-21<\/span>\"<\/span>],<\/span>\r\n\t\t[<\/span>\"<\/span>t1274<\/span>\"<\/span>,<\/span>\"<\/span>\u6d41\u5c71<\/span>\"<\/span>,<\/span>39872<\/span>,<\/span>\"<\/span>2003-8-27<\/span>\"<\/span>],<\/span>\r\n\t\t[<\/span>\"<\/span>t1275<\/span>\"<\/span>,<\/span>\"<\/span>\u516b\u5343\u4ee3<\/span>\"<\/span>,<\/span>21576<\/span>,<\/span>\"<\/span>2003-11-5<\/span>\"<\/span>],<\/span>\r\n\t\t[<\/span>\"<\/span>t1276<\/span>\"<\/span>,<\/span>\"<\/span>\u6211\u5b6b\u5b50<\/span>\"<\/span>,<\/span>53271<\/span>,<\/span>\"<\/span>2003-1-12<\/span>\"<\/span>],<\/span>\r\n\t\t[<\/span>\"<\/span>t1277<\/span>\"<\/span>,<\/span>\"<\/span>\u9d28\u5ddd<\/span>\"<\/span>,<\/span>81326<\/span>,<\/span>\"<\/span>2003-5-22<\/span>\"<\/span>],<\/span>\r\n\t\t[<\/span>\"<\/span>t1278<\/span>\"<\/span>,<\/span>\"<\/span>\u929a\u5b50<\/span>\"<\/span>,<\/span>95142<\/span>,<\/span>\"<\/span>2003-10-18<\/span>\"<\/span>]])<\/span>\r\n\r\n#print(df)\r\n#\r\n<\/span>engine<\/span> =<\/span> create_engine<\/span>(<\/span>'<\/span>postgresql:\/\/scott:tiger123@127.0.0.1\/city<\/span>'<\/span>)<\/span>\r\n#\r\n#\r\n<\/span>df<\/span>.<\/span>to_sql<\/span>(<\/span>name<\/span>=<\/span>'<\/span>cities<\/span>'<\/span>,<\/span>con<\/span>=<\/span>engine<\/span>,<\/span>if_exists<\/span>=<\/span>'<\/span>replace<\/span>'<\/span>,<\/span>index<\/span>=<\/span>None<\/span>)<\/span>\r\n#\r\n#\r\n<\/span>sys<\/span>.<\/span>stderr<\/span>.<\/span>write<\/span>(<\/span>\"<\/span>*** \u7d42\u4e86 ***<\/span>\\n<\/span>\"<\/span>)<\/span>\r\n# ------------------------------------------------------------------\r\n<\/span><\/code><\/pre>\n
\u8bfb\u53d6\u6570\u636e\u5e93<\/h2>\n
#! \/usr\/bin\/python\r\n# -*- coding: utf-8 -*-\r\n#\r\n#\tpostgre_read.py\r\n#\r\n#\t\t\t\t\tOct\/01\/2018\r\n# ------------------------------------------------------------------\r\n<\/span>import<\/span> sys<\/span>\r\nimport<\/span> pandas<\/span> as<\/span> pd<\/span>\r\n#\r\n<\/span>from<\/span> sqlalchemy<\/span> import<\/span> create_engine<\/span>\r\n# ------------------------------------------------------------------\r\n<\/span>sys<\/span>.<\/span>stderr<\/span>.<\/span>write<\/span>(<\/span>\"<\/span>*** \u958b\u59cb ***<\/span>\\n<\/span>\"<\/span>)<\/span>\r\n#\r\n<\/span>engine<\/span> =<\/span> create_engine<\/span>(<\/span>'<\/span>postgresql:\/\/scott:tiger123@127.0.0.1\/city<\/span>'<\/span>)<\/span>\r\n#\r\n<\/span>df<\/span>=<\/span>pd<\/span>.<\/span>read_sql_query<\/span>(<\/span>'<\/span>SELECT * FROM cities<\/span>'<\/span>,<\/span> con<\/span>=<\/span>engine<\/span>)<\/span>\r\nprint<\/span>(<\/span>df<\/span>)<\/span>\r\n#\r\n<\/span>df<\/span>.<\/span>to_csv<\/span>(<\/span>\"<\/span>tmp001.csv<\/span>\"<\/span>,<\/span>header<\/span>=<\/span>None<\/span>,<\/span>index<\/span>=<\/span>None<\/span>)<\/span>\r\nsys<\/span>.<\/span>stderr<\/span>.<\/span>write<\/span>(<\/span>\"<\/span>*** \u7d42\u4e86 ***<\/span>\\n<\/span>\"<\/span>)<\/span>\r\n# ------------------------------------------------------------------\r\n<\/span><\/code><\/pre>\n
\u786e\u8ba4\u7684\u7248\u672c<\/h2>\n
$ python\r\nPython 3.10.9 (main, Dec 19 2022, 17:35:49) [GCC 12.2.0] on linux\r\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\r\n>>> import pandas\r\n>>> pandas.__version__\r\n'1.5.3'\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u5728Arch Linux\u4e0a\u5b89\u88c5\u6240\u9700\u7684\u5e93\u6587\u4ef6\u3002 sudo pacman -S python-sqlalchemy  […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-41466","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4f7f\u7528pandas\u8fdb\u884cPostgreSQL\u7684\u8bfb\u5199 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528pandas\u8fdb\u884cpostgresql\u7684\u8bfb\u5199\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528pandas\u8fdb\u884cPostgreSQL\u7684\u8bfb\u5199\" \/>\n<meta property=\"og:description\" content=\"\u5728Arch Linux\u4e0a\u5b89\u88c5\u6240\u9700\u7684\u5e93\u6587\u4ef6\u3002 sudo pacman -S python-sqlalchemy […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528pandas\u8fdb\u884cpostgresql\u7684\u8bfb\u5199\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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