1 安装
pip install pymysql
2 地址
https://pypi.org/project/pymysql/
3 数据查询
import pymysql
# 查询操作
def func_database_search():
    global db
    # 打开数据库连接
    try:
        db = pymysql.connect(host='127.0.0.1', user='admin', passwd='123456', port=3306,
                             db='test')
        print('连接成功!')
    except:
        print('something wrong!')
    # 使用 cursor() 方法创建一个游标对象 cursor
    cursor = db.cursor()
    # SQL 查询语句
    sql = "SELECT url FROM news"
    try:
        # 执行SQL语句
        cursor.execute(sql)
        # 获取返回数量
        row_count = cursor.rowcount
        print(type(row_count))
        print(row_count)
        '''
        <class 'int'>
        16
        '''
        # 获取所有记录列表 fetchall返回二维元组(元组中含有元组)
        results = cursor.fetchall()
        print(type(results))
        print(results)
        '''
        <class 'tuple'>
        (('baidu.com',), ('cctv.com',))
        '''
        for row in results:
            scan_url = row[0]
            # 打印结果
            print('数据查询成功!')
    except:
        print("Error: unable to fetch data")
    # 关闭数据库连接
    db.close()
if __name__ == '__main__':
    func_database_search() 
 
 
参考链接:
 https://zhuanlan.zhihu.com/p/397765212
 http://www.xoxxoo.com/index/index/article/id/288










