python3 使用pymysql

 #! /usr/bin/env python3
 # coding = utf-8

 import random
 import pymysql

 # 连接数据库函数
 def connDB(data):
     conn = pymysql.connect(host='localhost',user='root',passwd='#######',db='test',)  #数据库
     cur = conn.cursor()   #游标
     cur.execute('create database if not exists test;')   #执语句行
     cur.execute('create table if not exists test1(id INT NOT NULL, num VARCHAR(40) );')
     for i in range(len(data)):
         cur.execute('insert into test1 (id,num) values("{0}","{1}");'.format(i,data[i]))   #{0} {1} 要和sql语句区分
     cur.close()  #关游标
     conn.commit()
     conn.close()  #关数据库

 # 产生激活码
 def make_number(num,length):
     lstr = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
     a = []
     cnt = 0
     while cnt < num:
         a_str = ''
         for j in range(length):
             a_str += random.choice(lstr)
         if a_str not in a:
             a.append(a_str)
             cnt +=1
     return a

 if __name__ == "__main__":
     nums = make_number(100,20)
     print(nums)
     connDB(nums)

错误处理：

pymysql.err.InternalError: (1054, "Unknown column 'K0F3hNCZUrXIA4wMEk6a' in 'field list'")

{0} {1} 要和sql语句区分，所以在该语句中用双引号标注，其他格式化字符串（d%，s%等也应用引号区分）