![\"python\u5982\u4f55\u8bc6\u522b\u6587\u4ef6\u6570\u636e\u5e93\"](\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24211456\/27b7f46c-7a36-4e37-8fab-0fdd0b8d1583.webp\")
<\/p>\n<\/p>\n
Python\u8bc6\u522b\u6587\u4ef6\u6570\u636e\u5e93\u7684\u65b9\u6cd5\u4e3b\u8981\u5305\u62ec\uff1a\u4f7f\u7528SQLite\u6570\u636e\u5e93\u3001\u4f7f\u7528Pandas\u5e93\u8bfb\u53d6CSV\u6587\u4ef6\u3001\u4f7f\u7528SQLAlchemy\u5e93\u64cd\u4f5c\u591a\u79cd\u6570\u636e\u5e93\u683c\u5f0f\u3002<\/strong> \u5176\u4e2d\uff0c\u4f7f\u7528SQLite\u6570\u636e\u5e93\u662f\u4e00\u79cd\u5e38\u89c1\u4e14\u65b9\u4fbf\u7684\u65b9\u6cd5\uff0c\u5b83\u662f\u4e00\u79cd\u8f7b\u91cf\u7ea7\u3001\u5d4c\u5165\u5f0f\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u9002\u7528\u4e8e\u5c0f\u578b\u5e94\u7528\u3002\u4e0b\u9762\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528SQLite\u6570\u636e\u5e93\u5728Python\u4e2d\u8bc6\u522b\u6587\u4ef6\u6570\u636e\u5e93\u3002<\/p>\n<\/p>\n \u4e00\u3001SQLite\u6570\u636e\u5e93<\/p>\n<\/p>\n SQLite\u662f\u4e00\u79cd\u8f7b\u91cf\u7ea7\u3001\u5d4c\u5165\u5f0f\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u9002\u7528\u4e8e\u5c0f\u578b\u5e94\u7528\u3002\u5b83\u662fPython\u5185\u7f6e\u652f\u6301\u7684\u6570\u636e\u5e93\uff0c\u4f7f\u7528\u65b9\u4fbf\u3002<\/p>\n<\/p>\n \u9996\u5148\uff0c\u786e\u4fdd\u60a8\u7684Python\u73af\u5883\u4e2d\u5df2\u7ecf\u5b89\u88c5\u4e86SQLite\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u884c\u5b89\u88c5\uff1a<\/p>\n<\/p>\n <\/code><\/pre>\n<\/p>\n \u5728Python\u4e2d\u5bfc\u5165SQLite\u6a21\u5757\uff1a<\/p>\n<\/p>\n <\/code><\/pre>\n<\/p>\n \u4f7f\u7528SQLite\u65f6\uff0c\u9996\u5148\u9700\u8981\u521b\u5efa\u548c\u8fde\u63a5\u6570\u636e\u5e93\uff1a<\/p>\n<\/p>\n cursor = conn.cursor()<\/p>\n <\/code><\/pre>\n<\/p>\n \u5982\u679c\u6570\u636e\u5e93\u6587\u4ef6\u4e0d\u5b58\u5728\uff0cSQLite\u4f1a\u81ea\u52a8\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6570\u636e\u5e93\u6587\u4ef6\u3002<\/p>\n<\/p>\n \u521b\u5efa\u4e00\u4e2a\u8868\u683c\u6765\u5b58\u50a8\u6570\u636e\uff1a<\/p>\n<\/p>\n (id INTEGER PRIMARY KEY, name TEXT, age INTEGER)''')<\/p>\n <\/code><\/pre>\n<\/p>\n \u63d2\u5165\u4e00\u4e9b\u793a\u4f8b\u6570\u636e\uff1a<\/p>\n<\/p>\n cursor.execute("INSERT INTO users (name, age) VALUES ('Bob', 30)")<\/p>\n conn.commit()<\/p>\n <\/code><\/pre>\n<\/p>\n \u67e5\u8be2\u6570\u636e\u5e76\u8fdb\u884c\u5904\u7406\uff1a<\/p>\n<\/p>\n rows = cursor.fetchall()<\/p>\n for row in rows:<\/p>\n print(row)<\/p>\n <\/code><\/pre>\n<\/p>\n \u5b8c\u6210\u64cd\u4f5c\u540e\uff0c\u5173\u95ed\u8fde\u63a5\uff1a<\/p>\n<\/p>\n <\/code><\/pre>\n<\/p>\n \u4e8c\u3001Pandas\u5e93\u8bfb\u53d6CSV\u6587\u4ef6<\/p>\n<\/p>\n Pandas\u5e93\u662fPython\u4e2d\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u5e93\uff0c\u9002\u7528\u4e8e\u5904\u7406CSV\u6587\u4ef6\u7b49\u7ed3\u6784\u5316\u6570\u636e\u3002<\/p>\n<\/p>\n \u9996\u5148\uff0c\u786e\u4fdd\u60a8\u7684Python\u73af\u5883\u4e2d\u5df2\u7ecf\u5b89\u88c5\u4e86Pandas\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u884c\u5b89\u88c5\uff1a<\/p>\n<\/p>\n <\/code><\/pre>\n<\/p>\n \u5728Python\u4e2d\u5bfc\u5165Pandas\u6a21\u5757\uff1a<\/p>\n<\/p>\n <\/code><\/pre>\n<\/p>\n \u4f7f\u7528Pandas\u8bfb\u53d6CSV\u6587\u4ef6\uff1a<\/p>\n<\/p>\n <\/code><\/pre>\n<\/p>\n Pandas\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u6570\u636e\u5904\u7406\u529f\u80fd\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n print(df.head())<\/p>\n print(df.info())<\/p>\n print(df.describe())<\/p>\n <\/code><\/pre>\n<\/p>\n \u5904\u7406\u5b8c\u6570\u636e\u540e\uff0c\u53ef\u4ee5\u5c06\u6570\u636e\u4fdd\u5b58\u56deCSV\u6587\u4ef6\uff1a<\/p>\n<\/p>\n <\/code><\/pre>\n<\/p>\n \u4e09\u3001SQLAlchemy\u5e93\u64cd\u4f5c\u591a\u79cd\u6570\u636e\u5e93\u683c\u5f0f<\/p>\n<\/p>\n SQLAlchemy\u662fPython\u4e2d\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u636e\u5e93\u64cd\u4f5c\u5e93\uff0c\u652f\u6301\u591a\u79cd\u6570\u636e\u5e93\u683c\u5f0f\u3002<\/p>\n<\/p>\n \u9996\u5148\uff0c\u786e\u4fdd\u60a8\u7684Python\u73af\u5883\u4e2d\u5df2\u7ecf\u5b89\u88c5\u4e86SQLAlchemy\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u884c\u5b89\u88c5\uff1a<\/p>\n<\/p>\n <\/code><\/pre>\n<\/p>\n \u5728Python\u4e2d\u5bfc\u5165SQLAlchemy\u6a21\u5757\uff1a<\/p>\n<\/p>\n from sqlalchemy.ext.declarative import declarative_base<\/p>\n from sqlalchemy.orm import sessionmaker<\/p>\n <\/code><\/pre>\n<\/p>\n \u4f7f\u7528SQLAlchemy\u521b\u5efa\u548c\u8fde\u63a5\u6570\u636e\u5e93\uff1a<\/p>\n<\/p>\n Base = declarative_base()<\/p>\n <\/code><\/pre>\n<\/p>\n \u5b9a\u4e49\u4e00\u4e2a\u8868\u683c\u6a21\u578b\u6765\u5b58\u50a8\u6570\u636e\uff1a<\/p>\n<\/p>\n __tablename__ = 'users'<\/p>\n id = Column(Integer, Sequence('user_id_seq'), primary_key=True)<\/p>\n name = Column(String(50))<\/p>\n age = Column(Integer)<\/p>\n <\/code><\/pre>\n<\/p>\n \u521b\u5efa\u8868\u683c\uff1a<\/p>\n<\/p>\n <\/code><\/pre>\n<\/p>\n \u63d2\u5165\u4e00\u4e9b\u793a\u4f8b\u6570\u636e\uff1a<\/p>\n<\/p>\n session = Session()<\/p>\n new_user = User(name='Alice', age=25)<\/p>\n session.add(new_user)<\/p>\n session.commit()<\/p>\n <\/code><\/pre>\n<\/p>\n \u67e5\u8be2\u6570\u636e\u5e76\u8fdb\u884c\u5904\u7406\uff1a<\/p>\n<\/p>\n for user in users:<\/p>\n print(user.name, user.age)<\/p>\n <\/code><\/pre>\n<\/p>\n \u5b8c\u6210\u64cd\u4f5c\u540e\uff0c\u5173\u95ed\u4f1a\u8bdd\uff1a<\/p>\n<\/p>\n <\/code><\/pre>\n<\/p>\n \u603b\u7ed3\uff1a<\/p>\n<\/p>\n \u901a\u8fc7\u4ee5\u4e0a\u4e09\u79cd\u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u5728Python\u4e2d\u8bc6\u522b\u548c\u5904\u7406\u6587\u4ef6\u6570\u636e\u5e93\u3002\u4f7f\u7528SQLite\u6570\u636e\u5e93\u3001\u4f7f\u7528Pandas\u5e93\u8bfb\u53d6CSV\u6587\u4ef6\u3001\u4f7f\u7528SQLAlchemy\u5e93\u64cd\u4f5c\u591a\u79cd\u6570\u636e\u5e93\u683c\u5f0f<\/strong>\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u72ec\u7279\u7684\u4f18\u52bf\uff0c\u60a8\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u9002\u5408\u7684\u65b9\u6cd5\u3002\u4f8b\u5982\uff0cSQLite\u9002\u7528\u4e8e\u5c0f\u578b\u5e94\u7528\uff0cPandas\u9002\u7528\u4e8e\u6570\u636e\u5206\u6790\u548c\u5904\u7406\uff0cSQLAlchemy\u5219\u9002\u7528\u4e8e\u591a\u79cd\u6570\u636e\u5e93\u683c\u5f0f\u7684\u64cd\u4f5c\u3002\u5e0c\u671b\u8fd9\u4e9b\u65b9\u6cd5\u80fd\u591f\u5e2e\u52a9\u60a8\u66f4\u597d\u5730\u8bc6\u522b\u548c\u5904\u7406\u6587\u4ef6\u6570\u636e\u5e93\u3002<\/p>\n<\/p>\n \u5982\u4f55\u5728Python\u4e2d\u8fde\u63a5\u5230\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u5e93\uff1f<\/strong> \u4f7f\u7528Python\u8bfb\u53d6\u548c\u5199\u5165\u6587\u4ef6\u6570\u636e\u5e93\u7684\u6700\u4f73\u5b9e\u8df5\u662f\u4ec0\u4e48\uff1f<\/strong> \u5982\u4f55\u5728Python\u4e2d\u5904\u7406\u6570\u636e\u5e93\u4e2d\u7684\u5f02\u5e38\u548c\u9519\u8bef\uff1f<\/strong>\u5b89\u88c5\u548c\u5bfc\u5165SQLite<\/h3>\n<\/p>\n
pip install pysqlite3<\/p>\nimport sqlite3<\/p>\n\u521b\u5efa\u548c\u8fde\u63a5\u6570\u636e\u5e93<\/h3>\n<\/p>\n
conn = sqlite3.connect('example.db')<\/p>\n\u521b\u5efa\u8868\u683c<\/h3>\n<\/p>\n
cursor.execute('''CREATE TABLE IF NOT EXISTS users<\/p>\n\u63d2\u5165\u6570\u636e<\/h3>\n<\/p>\n
cursor.execute("INSERT INTO users (name, age) VALUES ('Alice', 25)")<\/p>\n\u67e5\u8be2\u6570\u636e<\/h3>\n<\/p>\n
cursor.execute("SELECT * FROM users")<\/p>\n\u5173\u95ed\u8fde\u63a5<\/h3>\n<\/p>\n
conn.close()<\/p>\n\u5b89\u88c5\u548c\u5bfc\u5165Pandas<\/h3>\n<\/p>\n
pip install pandas<\/p>\nimport pandas as pd<\/p>\n\u8bfb\u53d6CSV\u6587\u4ef6<\/h3>\n<\/p>\n
df = pd.read_csv('example.csv')<\/p>\n\u5904\u7406\u6570\u636e<\/h3>\n<\/p>\n
# \u67e5\u770b\u524d\u51e0\u884c\u6570\u636e<\/p>\n\u83b7\u53d6\u6570\u636e\u7684\u57fa\u672c\u4fe1\u606f<\/strong><\/h2>\n
\u7edf\u8ba1\u63cf\u8ff0\u6570\u636e<\/strong><\/h2>\n
\u4fdd\u5b58\u6570\u636e<\/h3>\n<\/p>\n
df.to_csv('output.csv', index=False)<\/p>\n\u5b89\u88c5\u548c\u5bfc\u5165SQLAlchemy<\/h3>\n<\/p>\n
pip install sqlalchemy<\/p>\nfrom sqlalchemy import create_engine, Column, Integer, String, Sequence<\/p>\n\u521b\u5efa\u548c\u8fde\u63a5\u6570\u636e\u5e93<\/h3>\n<\/p>\n
engine = create_engine('sqlite:\/\/\/example.db')<\/p>\n\u5b9a\u4e49\u8868\u683c\u6a21\u578b<\/h3>\n<\/p>\n
class User(Base):<\/p>\n\u521b\u5efa\u8868\u683c<\/h3>\n<\/p>\n
Base.metadata.create_all(engine)<\/p>\n\u63d2\u5165\u6570\u636e<\/h3>\n<\/p>\n
Session = sessionmaker(bind=engine)<\/p>\n\u67e5\u8be2\u6570\u636e<\/h3>\n<\/p>\n
users = session.query(User).all()<\/p>\n\u5173\u95ed\u4f1a\u8bdd<\/h3>\n<\/p>\n
session.close()<\/p>\n\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
Python\u652f\u6301\u591a\u79cd\u6570\u636e\u5e93\u8fde\u63a5\u65b9\u5f0f\uff0c\u5305\u62ecSQLite\u3001MySQL\u3001PostgreSQL\u7b49\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u76f8\u5e94\u7684\u6570\u636e\u5e93\u9a71\u52a8\u7a0b\u5e8f\uff0c\u5982sqlite3\u3001mysql-connector-python\u6216psycopg2\u6765\u5efa\u7acb\u8fde\u63a5\u3002\u786e\u4fdd\u5b89\u88c5\u4e86\u6240\u9700\u7684\u5e93\uff0c\u5e76\u4f7f\u7528\u9002\u5f53\u7684\u8fde\u63a5\u5b57\u7b26\u4e32\u8fdb\u884c\u8fde\u63a5\u3002<\/p>\n
\u5728\u5904\u7406\u6587\u4ef6\u6570\u636e\u5e93\u65f6\uff0c\u91c7\u7528\u5408\u9002\u7684\u6587\u4ef6\u7ed3\u6784\u548c\u683c\u5f0f\u975e\u5e38\u91cd\u8981\u3002\u5bf9\u4e8eSQLite\u6570\u636e\u5e93\uff0c\u53ef\u4ee5\u4f7f\u7528sqlite3<\/code>\u6a21\u5757\u4e2d\u7684\u6e38\u6807\u5bf9\u8c61\u6267\u884cSQL\u67e5\u8be2\u3002\u6b64\u5916\uff0c\u5b9a\u671f\u5907\u4efd\u6570\u636e\u5e93\u6587\u4ef6\u548c\u786e\u4fdd\u5bf9\u6587\u4ef6\u7684\u8bfb\u5199\u6743\u9650\u4e5f\u80fd\u63d0\u9ad8\u6570\u636e\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n
\u5728\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u65f6\uff0c\u4f7f\u7528try-except\u7ed3\u6784\u53ef\u4ee5\u6709\u6548\u6355\u83b7\u548c\u5904\u7406\u5f02\u5e38\u3002\u60a8\u53ef\u4ee5\u5bf9\u7279\u5b9a\u7684\u6570\u636e\u5e93\u9519\u8bef\u8fdb\u884c\u5206\u7c7b\u5904\u7406\uff0c\u4f8b\u5982\u8fde\u63a5\u9519\u8bef\u3001\u67e5\u8be2\u9519\u8bef\u7b49\u3002\u8fd9\u4e0d\u4ec5\u6709\u52a9\u4e8e\u8c03\u8bd5\uff0c\u8fd8\u80fd\u63d0\u9ad8\u7a0b\u5e8f\u7684\u7a33\u5b9a\u6027\u3002\u786e\u4fdd\u5728\u53d1\u751f\u5f02\u5e38\u65f6\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u5e76\u63d0\u4f9b\u7528\u6237\u53cb\u597d\u7684\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u8bc6\u522b\u6587\u4ef6\u6570\u636e\u5e93\u7684\u65b9\u6cd5\u4e3b\u8981\u5305\u62ec\uff1a\u4f7f\u7528SQLite\u6570\u636e\u5e93\u3001\u4f7f\u7528Pandas\u5e93\u8bfb\u53d6CSV\u6587\u4ef6\u3001\u4f7f\u7528SQL […]","protected":false},"author":3,"featured_media":1096151,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1096127"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1096127"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1096127\/revisions"}],"predecessor-version":[{"id":1096156,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1096127\/revisions\/1096156"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1096151"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1096127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1096127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1096127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}