pymysql数据库操作

首先要pip install pymysql

import pymysql,sys
#print(sys.path)
from settings import mysql_info
# sql='insert into user (username,password) VALUE ("haha","man")'
# sql2='select * from user limit 3'
def OpMysql(host,port,user,passwd,db,charset,sql):
    conn = pymysql.connect(host=host, port=port, user=user, passwd=passwd, db=db,charset=charset)
    # 执行SQL，并返回收影响行数
    #effect_row = cursor.execute("update students set name = 'niuhy' where id = 1;")
    # 创建游标
    cur = conn.cursor(cursor=pymysql.cursors.DictCursor)#返回字典
    #cur = conn.cursor()#返回元组tuple,元组不可修改
    cur.execute(sql)
    if sql.startswith('select'):#判断是什么语句
        res  = cur.fetchall()
    else:
        conn.commit()
        res = 88
    cur.close()
    conn.close()
    return res

def jude_username(username):
    pass

#@judge_username
def login():
    username = input('set your username: ')
    pass

#OpMysql(mysql_info['host'],mysql_info['port'],mysql_info['user'],mysql_info['passwd'],mysql_info['db'],mysql_info['charset'],sql2)
#if __name__=='__main__':