封装一个python的pymysql操作类
作者:野生大虾
这篇文章主要介绍了封装一个python的pymysql操作类的相关资料,需要的朋友可以参考下
最近使用pymysql写脚本的情况越来越多了,刚好整理,简单封装一个pymysql的操作类
import pymysql class MysqlDB: def __init__( self, host=None, port=None, db=None, account=None, password=None, connect_timeout=20, read_timeout=20, write_timeout=20 ): self.conn = pymysql.connect( host=self.host, port=self.port, db=self.db, user=self.account, passwd=self.password, connect_timeout=self.connect_timeout, read_timeout=self.read_timeout, write_timeout=self.write_timeout ) def fetch(self, table_name=None, fields=(), where=None, many=False): cur = self.conn.cursor() if where: sql = f'select {",".join(fields)} from {table_name} where {where}' else: sql = f'select {",".join(fields)} from {table_name}' cur.execute(sql) if many: data = cur.fetchmany() else: data = cur.fetchone() cur.close() return data def update(self, table_name=None, field=None, value=None, where=None): cur = self.conn.cursor() sql = f'update {table_name} set {field} = {value}' if where: sql += f'where {where}' cur.execute(sql) self.conn.commit() cur.close() def insert(self, table_name=None, single=True, data_list: list = []): cur = self.conn.cursor() for data in data_list: sql = f'insert into {table_name}({",".join([key for key in data.keys()])}) values({",".join(["%s" for _ in range(len(data.keys()))])})' cur.execute(sql, data) self.conn.commit() cur.close() def quit(self): self.conn.close()
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