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import pymysql
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def connect_db():
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# 数据库连接参数
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db_host = 'localhost' # 数据库主机名
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db_user = 'root' # 数据库用户名
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db_password = '123456' # 数据库密码
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db_database = 'user_info' # 数据库名
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db_port = 3306 # 数据库端口，通常默认为3306
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# 创建连接
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connection = pymysql.connect(host=db_host,
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user=db_user,
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password=db_password,
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database=db_database,
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port=db_port)
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cursor = connection.cursor()
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return cursor
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if __name__ == '__main__':
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cursor = connect_db()
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print("数据库连接成功！")
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