{"id":1121226,"date":"2025-01-08T19:06:57","date_gmt":"2025-01-08T11:06:57","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1121226.html"},"modified":"2025-01-08T19:07:00","modified_gmt":"2025-01-08T11:07:00","slug":"python%e5%a6%82%e4%bd%95%e8%af%bb%e5%8f%96list%e9%83%a8%e5%88%86%e6%95%b0%e6%8d%ae%e5%ba%93","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1121226.html","title":{"rendered":"python\u5982\u4f55\u8bfb\u53d6list\u90e8\u5206\u6570\u636e\u5e93"},"content":{"rendered":"

\"python\u5982\u4f55\u8bfb\u53d6list\u90e8\u5206\u6570\u636e\u5e93\"<\/p>\n

Python \u5982\u4f55\u8bfb\u53d6 List \u90e8\u5206\u6570\u636e\u5e93<\/strong><\/p>\n<\/p>\n

\u5728Python\u4e2d\uff0c\u8bfb\u53d6list\u90e8\u5206\u6570\u636e\u5e93\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528\u8fde\u63a5\u5e93\uff08\u5982sqlite3\u3001pymysql\uff09\u3001\u6267\u884cSQL\u67e5\u8be2\u3001\u89e3\u6790\u67e5\u8be2\u7ed3\u679c\u4e3a\u5217\u8868\u3002<\/strong> \u5176\u4e2d\uff0c\u4f7f\u7528\u8fde\u63a5\u5e93\u662f\u5173\u952e\u6b65\u9aa4\u4e4b\u4e00\uff0c\u56e0\u4e3a\u5b83\u51b3\u5b9a\u4e86\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\u65b9\u5f0f\u548c\u64cd\u4f5c\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4f7f\u7528\u8fde\u63a5\u5e93\u5982sqlite3\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u65b9\u4fbf\u5730\u4e0eSQLite\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002\u4e3e\u4f8b\u6765\u8bf4\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u8bfb\u53d6\u6570\u636e\u5e93\u4e2d\u7684\u90e8\u5206\u6570\u636e\u5e76\u5c06\u5176\u5b58\u50a8\u5230Python\u7684list\u4e2d\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528\u8fde\u63a5\u5e93<\/p>\n<\/p>\n

\u4f7f\u7528\u8fde\u63a5\u5e93\u662f\u8bfb\u53d6\u6570\u636e\u5e93\u6570\u636e\u7684\u7b2c\u4e00\u6b65\uff0cPython \u63d0\u4f9b\u4e86\u591a\u79cd\u8fde\u63a5\u5e93\u4ee5\u652f\u6301\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u5e93\u3002\u5e38\u7528\u7684\u8fde\u63a5\u5e93\u5305\u62ec\uff1a<\/p>\n<\/p>\n

    \n
  1. sqlite3\uff1a\u7528\u4e8eSQLite\u6570\u636e\u5e93\uff1b<\/li>\n
  2. pymysql\uff1a\u7528\u4e8eMySQL\u6570\u636e\u5e93\uff1b<\/li>\n
  3. psycopg2\uff1a\u7528\u4e8ePostgreSQL\u6570\u636e\u5e93\u3002<\/li>\n<\/ol>\n

    \u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u8fd9\u4e9b\u5e93\u8fde\u63a5\u6570\u636e\u5e93\u5e76\u8bfb\u53d6\u90e8\u5206\u6570\u636e\u3002<\/p>\n<\/p>\n

    \u4e00\u3001sqlite3 \u8fde\u63a5\u548c\u8bfb\u53d6\u6570\u636e<\/h3>\n<\/p>\n

    SQLite \u662f\u4e00\u79cd\u8f7b\u91cf\u7ea7\u7684\u5d4c\u5165\u5f0f\u6570\u636e\u5e93\uff0c\u975e\u5e38\u9002\u5408\u5c0f\u578b\u5e94\u7528\u6216\u5355\u4e00\u7528\u6237\u7684\u573a\u666f\u3002Python \u5185\u7f6e\u4e86 sqlite3 \u6a21\u5757\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u4e0e SQLite \u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002<\/p>\n<\/p>\n

    1.1 \u8fde\u63a5\u6570\u636e\u5e93<\/h4>\n<\/p>\n

    \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5bfc\u5165 sqlite3 \u5e93\u5e76\u5efa\u7acb\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\u3002\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3a example.db<\/code> \u7684\u6570\u636e\u5e93\u6587\u4ef6\uff1a<\/p>\n<\/p>\n

    import sqlite3<\/p>\n
    \u8fde\u63a5\u5230\u6570\u636e\u5e93<\/strong><\/h2>\n
    conn = sqlite3.connect('example.db')<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    1.2 \u521b\u5efa\u6e38\u6807\u5e76\u6267\u884c\u67e5\u8be2<\/h4>\n<\/p>\n
    \u8fde\u63a5\u5efa\u7acb\u540e\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u6e38\u6807\u5bf9\u8c61\uff0c\u7528\u4e8e\u6267\u884c SQL \u67e5\u8be2\uff1a<\/p>\n<\/p>\n
    # \u521b\u5efa\u6e38\u6807<\/p>\n
    cursor = conn.cursor()<\/p>\n
    \u6267\u884c\u67e5\u8be2<\/strong><\/h2>\n
    cursor.execute("SELECT * FROM my_table")<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    1.3 \u89e3\u6790\u67e5\u8be2\u7ed3\u679c\u5e76\u5b58\u50a8\u5230\u5217\u8868<\/h4>\n<\/p>\n
    \u6267\u884c\u67e5\u8be2\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 fetchall()<\/code> \u65b9\u6cd5\u6765\u83b7\u53d6\u6240\u6709\u67e5\u8be2\u7ed3\u679c\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5230 Python \u7684 list \u4e2d\uff1a<\/p>\n<\/p>\n
    # \u83b7\u53d6\u6240\u6709\u67e5\u8be2\u7ed3\u679c<\/p>\n
    results = cursor.fetchall()<\/p>\n
    \u5c06\u67e5\u8be2\u7ed3\u679c\u5b58\u50a8\u5230\u5217\u8868<\/strong><\/h2>\n
    data_list = [list(row) for row in results]<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    1.4 \u5173\u95ed\u8fde\u63a5<\/h4>\n<\/p>\n
    \u6700\u540e\uff0c\u4e0d\u8981\u5fd8\u8bb0\u5173\u95ed\u6e38\u6807\u548c\u6570\u636e\u5e93\u8fde\u63a5\uff1a<\/p>\n<\/p>\n
    # \u5173\u95ed\u6e38\u6807<\/p>\n
    cursor.close()<\/p>\n
    \u5173\u95ed\u8fde\u63a5<\/strong><\/h2>\n
    conn.close()<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u4e8c\u3001pymysql \u8fde\u63a5\u548c\u8bfb\u53d6\u6570\u636e<\/h3>\n<\/p>\n
    MySQL \u662f\u4e00\u79cd\u5e38\u7528\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u9002\u7528\u4e8e\u591a\u7528\u6237\u8bbf\u95ee\u7684\u573a\u666f\u3002\u4f7f\u7528 pymysql \u5e93\u53ef\u4ee5\u65b9\u4fbf\u5730\u4e0e MySQL \u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002<\/p>\n<\/p>\n
    2.1 \u5b89\u88c5 pymysql<\/h4>\n<\/p>\n
    \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5b89\u88c5 pymysql \u5e93\uff1a<\/p>\n<\/p>\n
    pip install pymysql<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    2.2 \u8fde\u63a5\u6570\u636e\u5e93<\/h4>\n<\/p>\n
    \u4f7f\u7528 pymysql \u5e93\u8fde\u63a5 MySQL \u6570\u636e\u5e93\uff1a<\/p>\n<\/p>\n
    import pymysql<\/p>\n
    \u8fde\u63a5\u5230\u6570\u636e\u5e93<\/strong><\/h2>\n
    conn = pymysql.connect(<\/p>\n
        host='localhost',<\/p>\n
        user='yourusername',<\/p>\n
        password='yourpassword',<\/p>\n
        database='yourdatabase'<\/p>\n
    )<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    2.3 \u521b\u5efa\u6e38\u6807\u5e76\u6267\u884c\u67e5\u8be2<\/h4>\n<\/p>\n
    \u4e0e sqlite3 \u7c7b\u4f3c\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u6e38\u6807\u5bf9\u8c61\u5e76\u6267\u884c SQL \u67e5\u8be2\uff1a<\/p>\n<\/p>\n
    # \u521b\u5efa\u6e38\u6807<\/p>\n
    cursor = conn.cursor()<\/p>\n
    \u6267\u884c\u67e5\u8be2<\/strong><\/h2>\n
    cursor.execute("SELECT * FROM my_table")<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    2.4 \u89e3\u6790\u67e5\u8be2\u7ed3\u679c\u5e76\u5b58\u50a8\u5230\u5217\u8868<\/h4>\n<\/p>\n
    \u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\u5e76\u5b58\u50a8\u5230\u5217\u8868\u4e2d\uff1a<\/p>\n<\/p>\n
    # \u83b7\u53d6\u6240\u6709\u67e5\u8be2\u7ed3\u679c<\/p>\n
    results = cursor.fetchall()<\/p>\n
    \u5c06\u67e5\u8be2\u7ed3\u679c\u5b58\u50a8\u5230\u5217\u8868<\/strong><\/h2>\n
    data_list = [list(row) for row in results]<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    2.5 \u5173\u95ed\u8fde\u63a5<\/h4>\n<\/p>\n
    \u5173\u95ed\u6e38\u6807\u548c\u6570\u636e\u5e93\u8fde\u63a5\uff1a<\/p>\n<\/p>\n
    # \u5173\u95ed\u6e38\u6807<\/p>\n
    cursor.close()<\/p>\n
    \u5173\u95ed\u8fde\u63a5<\/strong><\/h2>\n
    conn.close()<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u4e09\u3001psycopg2 \u8fde\u63a5\u548c\u8bfb\u53d6\u6570\u636e<\/h3>\n<\/p>\n
    PostgreSQL \u662f\u4e00\u79cd\u529f\u80fd\u5f3a\u5927\u7684\u5f00\u6e90\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u9002\u7528\u4e8e\u590d\u6742\u67e5\u8be2\u548c\u9ad8\u6027\u80fd\u9700\u6c42\u7684\u573a\u666f\u3002\u4f7f\u7528 psycopg2 \u5e93\u53ef\u4ee5\u65b9\u4fbf\u5730\u4e0e PostgreSQL \u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002<\/p>\n<\/p>\n
    3.1 \u5b89\u88c5 psycopg2<\/h4>\n<\/p>\n
    \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5b89\u88c5 psycopg2 \u5e93\uff1a<\/p>\n<\/p>\n
    pip install psycopg2-binary<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    3.2 \u8fde\u63a5\u6570\u636e\u5e93<\/h4>\n<\/p>\n
    \u4f7f\u7528 psycopg2 \u5e93\u8fde\u63a5 PostgreSQL \u6570\u636e\u5e93\uff1a<\/p>\n<\/p>\n
    import psycopg2<\/p>\n
    \u8fde\u63a5\u5230\u6570\u636e\u5e93<\/strong><\/h2>\n
    conn = psycopg2.connect(<\/p>\n
        host='localhost',<\/p>\n
        user='yourusername',<\/p>\n
        password='yourpassword',<\/p>\n
        database='yourdatabase'<\/p>\n
    )<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    3.3 \u521b\u5efa\u6e38\u6807\u5e76\u6267\u884c\u67e5\u8be2<\/h4>\n<\/p>\n
    \u521b\u5efa\u6e38\u6807\u5bf9\u8c61\u5e76\u6267\u884c SQL \u67e5\u8be2\uff1a<\/p>\n<\/p>\n
    # \u521b\u5efa\u6e38\u6807<\/p>\n
    cursor = conn.cursor()<\/p>\n
    \u6267\u884c\u67e5\u8be2<\/strong><\/h2>\n
    cursor.execute("SELECT * FROM my_table")<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    3.4 \u89e3\u6790\u67e5\u8be2\u7ed3\u679c\u5e76\u5b58\u50a8\u5230\u5217\u8868<\/h4>\n<\/p>\n
    \u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\u5e76\u5b58\u50a8\u5230\u5217\u8868\u4e2d\uff1a<\/p>\n<\/p>\n
    # \u83b7\u53d6\u6240\u6709\u67e5\u8be2\u7ed3\u679c<\/p>\n
    results = cursor.fetchall()<\/p>\n
    \u5c06\u67e5\u8be2\u7ed3\u679c\u5b58\u50a8\u5230\u5217\u8868<\/strong><\/h2>\n
    data_list = [list(row) for row in results]<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    3.5 \u5173\u95ed\u8fde\u63a5<\/h4>\n<\/p>\n
    \u5173\u95ed\u6e38\u6807\u548c\u6570\u636e\u5e93\u8fde\u63a5\uff1a<\/p>\n<\/p>\n
    # \u5173\u95ed\u6e38\u6807<\/p>\n
    cursor.close()<\/p>\n
    \u5173\u95ed\u8fde\u63a5<\/strong><\/h2>\n
    conn.close()<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u56db\u3001\u4f18\u5316\u548c\u6269\u5c55<\/h3>\n<\/p>\n
    \u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u5bf9\u4e0a\u8ff0\u65b9\u6cd5\u8fdb\u884c\u4f18\u5316\u548c\u6269\u5c55\uff0c\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u6027\u80fd\u3002<\/p>\n<\/p>\n
    4.1 \u4f7f\u7528\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668<\/h4>\n<\/p>\n
    \u4f7f\u7528\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u53ef\u4ee5\u7b80\u5316\u4ee3\u7801\uff0c\u5e76\u786e\u4fdd\u5728\u51fa\u73b0\u5f02\u5e38\u65f6\u6b63\u786e\u5173\u95ed\u6e38\u6807\u548c\u6570\u636e\u5e93\u8fde\u63a5\u3002\u4ee5 sqlite3 \u4e3a\u4f8b\uff1a<\/p>\n<\/p>\n
    import sqlite3<\/p>\n
    with sqlite3.connect('example.db') as conn:<\/p>\n
        cursor = conn.cursor()<\/p>\n
        cursor.execute("SELECT * FROM my_table")<\/p>\n
        results = cursor.fetchall()<\/p>\n
        data_list = [list(row) for row in results]<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    4.2 \u5206\u6279\u6b21\u8bfb\u53d6\u6570\u636e<\/h4>\n<\/p>\n
    \u5bf9\u4e8e\u5927\u89c4\u6a21\u6570\u636e\u96c6\uff0c\u4e00\u6b21\u6027\u8bfb\u53d6\u6240\u6709\u6570\u636e\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5185\u5b58\u4e0d\u8db3\u3002\u6211\u4eec\u53ef\u4ee5\u5206\u6279\u6b21\u8bfb\u53d6\u6570\u636e\uff0c\u4ee5\u964d\u4f4e\u5185\u5b58\u5360\u7528\u3002\u4ee5 pymysql \u4e3a\u4f8b\uff1a<\/p>\n<\/p>\n
    import pymysql<\/p>\n
    conn = pymysql.connect(<\/p>\n
        host='localhost',<\/p>\n
        user='yourusername',<\/p>\n
        password='yourpassword',<\/p>\n
        database='yourdatabase'<\/p>\n
    )<\/p>\n
    cursor = conn.cursor()<\/p>\n
    cursor.execute("SELECT * FROM my_table")<\/p>\n
    data_list = []<\/p>\n
    batch_size = 100<\/p>\n
    while True:<\/p>\n
        batch = cursor.fetchmany(batch_size)<\/p>\n
        if not batch:<\/p>\n
            break<\/p>\n
        data_list.extend([list(row) for row in batch])<\/p>\n
    cursor.close()<\/p>\n
    conn.close()<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
    \u901a\u8fc7\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u5728 Python \u4e2d\u4f7f\u7528\u4e0d\u540c\u7684\u8fde\u63a5\u5e93\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\uff0c\u5e76\u5c06\u67e5\u8be2\u7ed3\u679c\u5b58\u50a8\u5230\u5217\u8868\u4e2d\u3002\u9009\u62e9\u5408\u9002\u7684\u8fde\u63a5\u5e93\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u6570\u636e\u5e93\u7c7b\u578b\u548c\u5e94\u7528\u573a\u666f\u3002\u4e3a\u4e86\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u6027\u80fd\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u548c\u5206\u6279\u6b21\u8bfb\u53d6\u6570\u636e\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
    \u8fd9\u4e9b\u65b9\u6cd5\u4e0d\u4ec5\u9002\u7528\u4e8e\u8bfb\u53d6 list \u90e8\u5206\u6570\u636e\u5e93\uff0c\u8fd8\u53ef\u4ee5\u6269\u5c55\u5230\u5176\u4ed6\u7c7b\u578b\u7684\u6570\u636e\u64cd\u4f5c\uff0c\u5982\u63d2\u5165\u3001\u66f4\u65b0\u548c\u5220\u9664\u3002\u5e0c\u671b\u672c\u6587\u80fd\u4e3a\u60a8\u63d0\u4f9b\u6709\u4ef7\u503c\u7684\u53c2\u8003\uff0c\u5e2e\u52a9\u60a8\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u66f4\u9ad8\u6548\u5730\u8fdb\u884c\u6570\u636e\u5e93\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
    \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
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