{"id":97048,"date":"2024-10-20T14:34:20","date_gmt":"2024-10-20T06:34:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/97048\/"},"modified":"2024-10-20T14:34:20","modified_gmt":"2024-10-20T06:34:20","slug":"python%e8%88%87%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e7%84%a1%e7%b8%ab%e5%b0%8d%e6%8e%a5-python-%e7%9b%b8%e9%97%9c%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/97048\/","title":{"rendered":"Python\u8207\u6578\u64da\u5eab\u7684\u7121\u7e2b\u5c0d\u63a5 (python \u76f8\u95dc\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"python%e8%88%87%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e7%84%a1%e7%b8%ab%e5%b0%8d%e6%8e%a5-XYIrHIxXZW\">Python\u8207\u6578\u64da\u5eab\u7684\u7121\u7e2b\u5c0d\u63a5<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u6642\u4ee3\uff0cPython\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u4e14\u6613\u65bc\u5b78\u7fd2\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u5df2\u7d93\u6210\u70ba\u6578\u64da\u79d1\u5b78\u3001\u7db2\u9801\u958b\u767c\u548c\u81ea\u52d5\u5316\u7b49\u9818\u57df\u7684\u71b1\u9580\u9078\u64c7\u3002\u8207\u6578\u64da\u5eab\u7684\u7121\u7e2b\u5c0d\u63a5\u662fPython\u7684\u4e00\u500b\u91cd\u8981\u7279\u6027\uff0c\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u8f15\u9b06\u5730\u9032\u884c\u6578\u64da\u5b58\u53d6\u548c\u7ba1\u7406\u3002\u672c\u6587\u5c07\u63a2\u8a0ePython\u8207\u5404\u7a2e\u6578\u64da\u5eab\u7684\u6574\u5408\u65b9\u5f0f\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"python%e8%88%87%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e9%80%a3%e6%8e%a5-XYIrHIxXZW\">Python\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5<\/h2>\n<p>Python\u652f\u6301\u591a\u7a2e\u6578\u64da\u5eab\uff0c\u5305\u62ec\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982MySQL\u3001PostgreSQL\u3001SQLite\uff09\u548c\u975e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982MongoDB\uff09\u3002\u9019\u4e9b\u6578\u64da\u5eab\u53ef\u4ee5\u901a\u904e\u4e0d\u540c\u7684\u5eab\u548c\u6846\u67b6\u9032\u884c\u9023\u63a5\u548c\u64cd\u4f5c\u3002<\/p>\n<h3 id=\"%e9%97%9c%e4%bf%82%e5%9e%8b%e6%95%b8%e6%93%9a%e5%ba%ab-XYIrHIxXZW\">\u95dc\u4fc2\u578b\u6578\u64da\u5eab<\/h3>\n<p>\u5c0d\u65bc\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff0cPython\u7684<a href=\"https:\/\/pypi.org\/project\/mysql-connector-python\/\" rel=\"nofollow noopener\" target=\"_blank\">mysql-connector-python<\/a>\u548c<a href=\"https:\/\/pypi.org\/project\/psycopg2\/\" rel=\"nofollow noopener\" target=\"_blank\">psycopg2<\/a>\u662f\u5e38\u7528\u7684\u5eab\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528\u9019\u4e9b\u5eab\u9023\u63a5MySQL\u548cPostgreSQL\u7684\u793a\u4f8b\uff1a<\/p>\n<h4 id=\"%e9%80%a3%e6%8e%a5mysql%e6%95%b8%e6%93%9a%e5%ba%ab-XYIrHIxXZW\">\u9023\u63a5MySQL\u6578\u64da\u5eab<\/h4>\n<pre><code>import mysql.connector\n\n# \u5efa\u7acb\u9023\u63a5\nconn = mysql.connector.connect(\n    host=\"localhost\",\n    user=\"yourusername\",\n    password=\"yourpassword\",\n    database=\"yourdatabase\"\n)\n\n# \u5275\u5efa\u6e38\u6a19\ncursor = conn.cursor()\n\n# \u57f7\u884c\u67e5\u8a62\ncursor.execute(\"SELECT * FROM yourtable\")\n\n# \u7372\u53d6\u7d50\u679c\nresults = cursor.fetchall()\nfor row in results:\n    print(row)\n\n# \u95dc\u9589\u9023\u63a5\ncursor.close()\nconn.close()\n<\/code><\/pre>\n<h4 id=\"%e9%80%a3%e6%8e%a5postgresql%e6%95%b8%e6%93%9a%e5%ba%ab-XYIrHIxXZW\">\u9023\u63a5PostgreSQL\u6578\u64da\u5eab<\/h4>\n<pre><code>import psycopg2\n\n# \u5efa\u7acb\u9023\u63a5\nconn = psycopg2.connect(\n    host=\"localhost\",\n    database=\"yourdatabase\",\n    user=\"yourusername\",\n    password=\"yourpassword\"\n)\n\n# \u5275\u5efa\u6e38\u6a19\ncursor = conn.cursor()\n\n# \u57f7\u884c\u67e5\u8a62\ncursor.execute(\"SELECT * FROM yourtable\")\n\n# \u7372\u53d6\u7d50\u679c\nresults = cursor.fetchall()\nfor row in results:\n    print(row)\n\n# \u95dc\u9589\u9023\u63a5\ncursor.close()\nconn.close()\n<\/code><\/pre>\n<h3 id=\"%e9%9d%9e%e9%97%9c%e4%bf%82%e5%9e%8b%e6%95%b8%e6%93%9a%e5%ba%ab-XYIrHIxXZW\">\u975e\u95dc\u4fc2\u578b\u6578\u64da\u5eab<\/h3>\n<p>\u5c0d\u65bc\u975e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff0cPython\u7684<a href=\"https:\/\/pypi.org\/project\/pymongo\/\" rel=\"nofollow noopener\" target=\"_blank\">pymongo<\/a>\u5eab\u662f\u8207MongoDB\u9032\u884c\u4ea4\u4e92\u7684\u4e3b\u8981\u5de5\u5177\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528pymongo\u9023\u63a5MongoDB\u7684\u793a\u4f8b\uff1a<\/p>\n<h4 id=\"%e9%80%a3%e6%8e%a5mongodb%e6%95%b8%e6%93%9a%e5%ba%ab-XYIrHIxXZW\">\u9023\u63a5MongoDB\u6578\u64da\u5eab<\/h4>\n<pre><code>from pymongo import MongoClient\n\n# \u5efa\u7acb\u9023\u63a5\nclient = MongoClient(\"mongodb:\/\/localhost:27017\/\")\n\n# \u9078\u64c7\u6578\u64da\u5eab\ndb = client[\"yourdatabase\"]\n\n# \u9078\u64c7\u96c6\u5408\ncollection = db[\"yourcollection\"]\n\n# \u67e5\u8a62\u6578\u64da\nresults = collection.find()\nfor document in results:\n    print(document)\n\n# \u95dc\u9589\u9023\u63a5\nclient.close()\n<\/code><\/pre>\n<h2 id=\"orm%e6%a1%86%e6%9e%b6%e7%9a%84%e4%bd%bf%e7%94%a8-XYIrHIxXZW\">ORM\u6846\u67b6\u7684\u4f7f\u7528<\/h2>\n<p>\u9664\u4e86\u76f4\u63a5\u4f7f\u7528\u6578\u64da\u5eab\u9a45\u52d5\uff0cPython\u9084\u652f\u6301\u591a\u7a2eORM\uff08\u5c0d\u8c61\u95dc\u4fc2\u6620\u5c04\uff09\u6846\u67b6\uff0c\u5982<a href=\"https:\/\/www.sqlalchemy.org\/\" rel=\"nofollow noopener\" target=\"_blank\">SQLAlchemy<\/a>\u548c<a href=\"https:\/\/django-rest-framework.org\/\" rel=\"nofollow noopener\" target=\"_blank\">Django ORM<\/a>\u3002\u9019\u4e9b\u6846\u67b6\u53ef\u4ee5\u7c21\u5316\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u8b93\u958b\u767c\u8005\u5c08\u6ce8\u65bc\u696d\u52d9\u908f\u8f2f\uff0c\u800c\u4e0d\u5fc5\u904e\u591a\u95dc\u6ce8\u5e95\u5c64\u7684SQL\u8a9e\u53e5\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8sqlalchemy%e7%9a%84%e7%a4%ba%e4%be%8b-XYIrHIxXZW\">\u4f7f\u7528SQLAlchemy\u7684\u793a\u4f8b<\/h3>\n<pre><code>from sqlalchemy import create_engine, Column, Integer, String\nfrom sqlalchemy.ext.declarative import declarative_base\nfrom sqlalchemy.orm import sessionmaker\n\n# \u5b9a\u7fa9\u6578\u64da\u5eab\u5f15\u64ce\nengine = create_engine('mysql+mysqlconnector:\/\/user:password@localhost\/dbname')\n\n# \u5b9a\u7fa9\u57fa\u985e\nBase = declarative_base()\n\n# \u5b9a\u7fa9\u6a21\u578b\nclass User(Base):\n    __tablename__ = 'users'\n    id = Column(Integer, primary_key=True)\n    name = Column(String)\n\n# \u5275\u5efa\u8868\nBase.metadata.create_all(engine)\n\n# \u5275\u5efa\u6703\u8a71\nSession = sessionmaker(bind=engine)\nsession = Session()\n\n# \u6dfb\u52a0\u6578\u64da\nnew_user = User(name='John Doe')\nsession.add(new_user)\nsession.commit()\n\n# \u67e5\u8a62\u6578\u64da\nfor user in session.query(User).all():\n    print(user.name)\n\n# \u95dc\u9589\u6703\u8a71\nsession.close()\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-XYIrHIxXZW\">\u7e3d\u7d50<\/h2>\n<p>Python\u8207\u6578\u64da\u5eab\u7684\u7121\u7e2b\u5c0d\u63a5\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u9ad8\u6548\u5730\u9032\u884c\u6578\u64da\u7ba1\u7406\u548c\u64cd\u4f5c\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u76f4\u63a5\u7684\u6578\u64da\u5eab\u9a45\u52d5\u9084\u662fORM\u6846\u67b6\uff0cPython\u90fd\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u9078\u64c7\u4f86\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\u548c\u61c9\u7528\u5834\u666f\u7684\u591a\u6a23\u5316\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u548c\u5de5\u5177\u5c07\u6210\u70ba\u958b\u767c\u8005\u6210\u529f\u7684\u95dc\u9375\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684<a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684Python\u61c9\u7528\uff0cServer.HK\u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Python\u8207\u5404\u985e\u6578\u64da\u5eab\u7684\u7121\u7e2b\u5c0d\u63a5\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u5be6\u73fe\u9ad8\u6548\u958b\u767c\u8207\u6578\u64da\u7ba1\u7406\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-97048","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97048","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=97048"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97048\/revisions"}],"predecessor-version":[{"id":97049,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97048\/revisions\/97049"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=97048"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=97048"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=97048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}