读取数据库pymysql

Posted 2020-11-27 测试媛S

# 读取数据库

    # 链接数据库
    # 创建一个查询页
    # 输入sql语句
    # 查询
    # 查看结果
    # 关闭查询页
    # 关闭数据库

import pymysql

class ReadMysql:
    def __init__(self):
        self.mysql = pymysql.connect(host=‘‘, user=‘‘, password=‘‘, charset=‘utf8‘, port=3306)
        self.cursor = self.mysql.cursor()

    def fetch_one(self, sql):
        self.cursor.execute(sql)
        result = self.cursor.fetchone()[0]
        print(result)

    def fetch_all(self, sql):
        self.cursor.execute(sql)
        result = self.cursor.fetchall()[0][0]
        print(result)
        
        
    def close(self):
        self.cursor.close()
        self.mysql.close()
        

if __name__ == ‘__main__‘: