![\"python](\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24200544\/ba21307b-c800-40bb-9252-31e974099452.webp\")
<\/p>\n<\/p>\n
\u5236\u4f5c\u6570\u636e\u5e93\u7a0b\u5e8f\u6d89\u53ca\u7684\u6838\u5fc3\u8981\u70b9\u5305\u62ec\u9009\u62e9\u6570\u636e\u5e93\u3001\u5b89\u88c5\u76f8\u5173\u5e93\u3001\u8fde\u63a5\u6570\u636e\u5e93\u3001\u521b\u5efa\u8868\u3001\u63d2\u5165\u6570\u636e\u548c\u67e5\u8be2\u6570\u636e\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Python\u5236\u4f5c\u4e00\u4e2a\u6570\u636e\u5e93\u7a0b\u5e8f\u3002<\/strong><\/p>\n<\/p>\n \u4e00\u3001\u9009\u62e9\u6570\u636e\u5e93\u7c7b\u578b<\/p>\n<\/p>\n \u9009\u62e9\u4e00\u4e2a\u6570\u636e\u5e93\u7c7b\u578b\u662f\u5236\u4f5c\u6570\u636e\u5e93\u7a0b\u5e8f\u7684\u7b2c\u4e00\u6b65\u3002\u5e38\u89c1\u7684\u6570\u636e\u5e93\u7c7b\u578b\u6709\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff08\u5982MySQL\u3001PostgreSQL\u3001SQLite\uff09\u548c\u975e\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff08\u5982MongoDB\u3001Redis\uff09\u3002\u4e3a\u4e86\u7b80\u5355\u8d77\u89c1\uff0c\u672c\u6587\u5c06\u4e3b\u8981\u8bb2\u8ff0\u5982\u4f55\u4f7f\u7528SQLite\uff0c\u56e0\u4e3a\u5b83\u662f\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u5e76\u4e14Python\u5185\u7f6e\u652f\u6301\u3002<\/p>\n<\/p>\n \u4e8c\u3001\u5b89\u88c5\u76f8\u5173\u5e93<\/p>\n<\/p>\n \u867d\u7136Python\u5185\u7f6e\u652f\u6301SQLite\uff0c\u4f46\u5982\u679c\u9009\u62e9\u5176\u4ed6\u6570\u636e\u5e93\u7c7b\u578b\uff0c\u4f60\u9700\u8981\u5b89\u88c5\u76f8\u5e94\u7684\u5e93\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u6570\u636e\u5e93\u7c7b\u578b\u53ca\u5176\u76f8\u5e94\u7684Python\u5e93\uff1a<\/p>\n<\/p>\n \u4f60\u53ef\u4ee5\u4f7f\u7528pip\u6765\u5b89\u88c5\u8fd9\u4e9b\u5e93\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n pip install psycopg2<\/p>\n pip install pymongo<\/p>\n <\/code><\/pre>\n<\/p>\n \u4e09\u3001\u8fde\u63a5\u6570\u636e\u5e93<\/p>\n<\/p>\n \u63a5\u4e0b\u6765\uff0c\u8fde\u63a5\u5230\u6570\u636e\u5e93\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528Python\u8fde\u63a5\u5230SQLite\u6570\u636e\u5e93\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n conn = sqlite3.connect('example.db')<\/p>\n cursor = conn.cursor()<\/p>\n <\/code><\/pre>\n<\/p>\n \u56db\u3001\u521b\u5efa\u8868<\/p>\n<\/p>\n \u8fde\u63a5\u5230\u6570\u636e\u5e93\u540e\uff0c\u4f60\u9700\u8981\u521b\u5efa\u8868\u6765\u5b58\u50a8\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528SQL\u8bed\u53e5\u5728SQLite\u4e2d\u521b\u5efa\u8868\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n cursor.execute('''CREATE TABLE IF NOT EXISTS users<\/p>\n (id INTEGER PRIMARY KEY, name TEXT, age INTEGER)''')<\/p>\n conn.commit()<\/p>\n <\/code><\/pre>\n<\/p>\n \u521b\u5efa\u8868\u65f6\uff0c\u4f60\u9700\u8981\u6307\u5b9a\u6bcf\u4e2a\u5217\u7684\u540d\u79f0\u548c\u6570\u636e\u7c7b\u578b\u3002\u5e38\u89c1\u7684\u6570\u636e\u7c7b\u578b\u5305\u62ec INTEGER\u3001TEXT\u3001REAL \u548c BLOB\u3002<\/strong><\/p>\n<\/p>\n \u4e94\u3001\u63d2\u5165\u6570\u636e<\/p>\n<\/p>\n \u521b\u5efa\u8868\u540e\uff0c\u4f60\u53ef\u4ee5\u63d2\u5165\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528SQL\u8bed\u53e5\u63d2\u5165\u6570\u636e\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n cursor.execute("INSERT INTO users (name, age) VALUES (?, ?)", ('Alice', 30))<\/p>\n cursor.execute("INSERT INTO users (name, age) VALUES (?, ?)", ('Bob', 25))<\/p>\n conn.commit()<\/p>\n <\/code><\/pre>\n<\/p>\n \u63d2\u5165\u6570\u636e\u65f6\uff0c\u4f60\u9700\u8981\u4f7f\u7528\u5360\u4f4d\u7b26\u6765\u9632\u6b62SQL\u6ce8\u5165\u653b\u51fb\u3002\u5360\u4f4d\u7b26\u5728\u4e0d\u540c\u7684\u6570\u636e\u5e93\u4e2d\u53ef\u80fd\u6709\u6240\u4e0d\u540c\uff0c\u4f8b\u5982 SQLite \u4f7f\u7528\u95ee\u53f7\uff08?\uff09\uff0c\u800c PostgreSQL \u4f7f\u7528\u767e\u5206\u53f7\uff08%s\uff09\u3002<\/strong><\/p>\n<\/p>\n \u516d\u3001\u67e5\u8be2\u6570\u636e<\/p>\n<\/p>\n \u63d2\u5165\u6570\u636e\u540e\uff0c\u4f60\u53ef\u4ee5\u67e5\u8be2\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528SQL\u8bed\u53e5\u67e5\u8be2\u6570\u636e\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n cursor.execute("SELECT * FROM users")<\/p>\n rows = cursor.fetchall()<\/p>\n for row in rows:<\/p>\n print(row)<\/p>\n <\/code><\/pre>\n<\/p>\n \u67e5\u8be2\u6570\u636e\u65f6\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u5404\u79cdSQL\u8bed\u53e5\u6765\u7b5b\u9009\u3001\u6392\u5e8f\u548c\u8fc7\u6ee4\u6570\u636e\u3002fetchall() \u65b9\u6cd5\u8fd4\u56de\u6240\u6709\u67e5\u8be2\u7ed3\u679c\uff0c\u800c fetchone() \u65b9\u6cd5\u53ea\u8fd4\u56de\u7b2c\u4e00\u6761\u8bb0\u5f55\u3002<\/strong><\/p>\n<\/p>\n \u4e03\u3001\u66f4\u65b0\u548c\u5220\u9664\u6570\u636e<\/p>\n<\/p>\n \u9664\u4e86\u63d2\u5165\u548c\u67e5\u8be2\u6570\u636e\uff0c\u4f60\u8fd8\u53ef\u4ee5\u66f4\u65b0\u548c\u5220\u9664\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528SQL\u8bed\u53e5\u66f4\u65b0\u548c\u5220\u9664\u6570\u636e\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n cursor.execute("UPDATE users SET age = ? WHERE name = ?", (35, 'Alice'))<\/p>\n cursor.execute("DELETE FROM users WHERE name = ?", ('Bob',))<\/p>\n conn.commit()<\/p>\n <\/code><\/pre>\n<\/p>\n \u66f4\u65b0\u6570\u636e\u65f6\uff0c\u4f60\u9700\u8981\u6307\u5b9a\u8981\u66f4\u65b0\u7684\u5217\u548c\u6761\u4ef6\u3002\u5220\u9664\u6570\u636e\u65f6\uff0c\u4f60\u9700\u8981\u6307\u5b9a\u8981\u5220\u9664\u7684\u8bb0\u5f55\u7684\u6761\u4ef6\u3002<\/strong><\/p>\n<\/p>\n \u516b\u3001\u5173\u95ed\u8fde\u63a5<\/p>\n<\/p>\n \u5b8c\u6210\u6570\u636e\u5e93\u64cd\u4f5c\u540e\uff0c\u4f60\u9700\u8981\u5173\u95ed\u8fde\u63a5\u4ee5\u91ca\u653e\u8d44\u6e90\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5173\u95ed\u8fde\u63a5\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n cursor.close()<\/p>\n conn.close()<\/p>\n <\/code><\/pre>\n<\/p>\n \u5173\u95ed\u8fde\u63a5\u65f6\uff0c\u4f60\u9700\u8981\u5148\u5173\u95ed\u6e38\u6807\u5bf9\u8c61\uff0c\u7136\u540e\u5173\u95ed\u8fde\u63a5\u5bf9\u8c61\u3002<\/strong><\/p>\n<\/p>\n \u4e5d\u3001\u5904\u7406\u5f02\u5e38<\/p>\n<\/p>\n \u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u6570\u636e\u5e93\u64cd\u4f5c\u53ef\u80fd\u4f1a\u51fa\u73b0\u5404\u79cd\u5f02\u5e38\uff0c\u56e0\u6b64\u4f60\u9700\u8981\u6dfb\u52a0\u5f02\u5e38\u5904\u7406\u4ee3\u7801\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5904\u7406\u5f02\u5e38\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n # \u8fde\u63a5\u5230\u6570\u636e\u5e93<\/p>\n conn = sqlite3.connect('example.db')<\/p>\n cursor = conn.cursor()<\/p>\n # \u6267\u884c\u6570\u636e\u5e93\u64cd\u4f5c<\/p>\n cursor.execute("SELECT * FROM users")<\/p>\n rows = cursor.fetchall()<\/p>\n for row in rows:<\/p>\n print(row)<\/p>\n except sqlite3.Error as e:<\/p>\n print(f"\u6570\u636e\u5e93\u9519\u8bef: {e}")<\/p>\n finally:<\/p>\n if cursor:<\/p>\n cursor.close()<\/p>\n if conn:<\/p>\n conn.close()<\/p>\n <\/code><\/pre>\n<\/p>\n \u5904\u7406\u5f02\u5e38\u65f6\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 try…except…finally \u8bed\u53e5\u3002\u5728 finally \u5757\u4e2d\uff0c\u786e\u4fdd\u6e38\u6807\u548c\u8fde\u63a5\u5bf9\u8c61\u88ab\u6b63\u786e\u5173\u95ed\uff0c\u5373\u4f7f\u53d1\u751f\u5f02\u5e38\u4e5f\u4e0d\u4f8b\u5916\u3002<\/strong><\/p>\n<\/p>\n \u5341\u3001\u5b8c\u6574\u793a\u4f8b<\/p>\n<\/p>\n \u6700\u540e\uff0c\u6211\u4eec\u5c06\u6240\u6709\u6b65\u9aa4\u6574\u5408\u5728\u4e00\u8d77\uff0c\u7ed9\u51fa\u4e00\u4e2a\u5b8c\u6574\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n def connect_db(db_name):<\/p>\n try:<\/p>\n conn = sqlite3.connect(db_name)<\/p>\n cursor = conn.cursor()<\/p>\n return conn, cursor<\/p>\n except sqlite3.Error as e:<\/p>\n print(f"\u6570\u636e\u5e93\u8fde\u63a5\u9519\u8bef: {e}")<\/p>\n return None, None<\/p>\n def create_table(cursor):<\/p>\n try:<\/p>\n cursor.execute('''CREATE TABLE IF NOT EXISTS users<\/p>\n (id INTEGER PRIMARY KEY, name TEXT, age INTEGER)''')<\/p>\n except sqlite3.Error as e:<\/p>\n print(f"\u521b\u5efa\u8868\u9519\u8bef: {e}")<\/p>\n def insert_data(cursor, conn, name, age):<\/p>\n try:<\/p>\n cursor.execute("INSERT INTO users (name, age) VALUES (?, ?)", (name, age))<\/p>\n conn.commit()<\/p>\n except sqlite3.Error as e:<\/p>\n print(f"\u63d2\u5165\u6570\u636e\u9519\u8bef: {e}")<\/p>\n def query_data(cursor):<\/p>\n try:<\/p>\n cursor.execute("SELECT * FROM users")<\/p>\n rows = cursor.fetchall()<\/p>\n for row in rows:<\/p>\n print(row)<\/p>\n except sqlite3.Error as e:<\/p>\n print(f"\u67e5\u8be2\u6570\u636e\u9519\u8bef: {e}")<\/p>\n def update_data(cursor, conn, name, age):<\/p>\n try:<\/p>\n cursor.execute("UPDATE users SET age = ? WHERE name = ?", (age, name))<\/p>\n conn.commit()<\/p>\n except sqlite3.Error as e:<\/p>\n print(f"\u66f4\u65b0\u6570\u636e\u9519\u8bef: {e}")<\/p>\n def delete_data(cursor, conn, name):<\/p>\n try:<\/p>\n cursor.execute("DELETE FROM users WHERE name = ?", (name,))<\/p>\n conn.commit()<\/p>\n except sqlite3.Error as e:<\/p>\n print(f"\u5220\u9664\u6570\u636e\u9519\u8bef: {e}")<\/p>\n def close_connection(cursor, conn):<\/p>\n if cursor:<\/p>\n cursor.close()<\/p>\n if conn:<\/p>\n conn.close()<\/p>\n\n
mysql-connector-python<\/code> \u6216 PyMySQL<\/code><\/li>\npsycopg2<\/code><\/li>\npymongo<\/code><\/li>\n<\/ul>\npip install mysql-connector-python<\/p>\nimport sqlite3<\/p>\n\u8fde\u63a5\u5230SQLite\u6570\u636e\u5e93<\/strong><\/h2>\n
\u521b\u5efa\u4e00\u4e2a\u6e38\u6807\u5bf9\u8c61<\/strong><\/h2>\n
# \u521b\u5efa\u4e00\u4e2a\u8868<\/p>\n\u63d0\u4ea4\u66f4\u6539<\/strong><\/h2>\n
# \u63d2\u5165\u6570\u636e<\/p>\n\u63d0\u4ea4\u66f4\u6539<\/strong><\/h2>\n
# \u67e5\u8be2\u6570\u636e<\/p>\n\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c<\/strong><\/h2>\n
\u6253\u5370\u67e5\u8be2\u7ed3\u679c<\/strong><\/h2>\n
# \u66f4\u65b0\u6570\u636e<\/p>\n\u5220\u9664\u6570\u636e<\/strong><\/h2>\n
\u63d0\u4ea4\u66f4\u6539<\/strong><\/h2>\n
# \u5173\u95ed\u6e38\u6807<\/p>\n\u5173\u95ed\u8fde\u63a5<\/strong><\/h2>\n
try:<\/p>\nimport sqlite3<\/p>\n