Maison > Article > développement back-end > 怎么生成优惠券并将优惠券存入Mysql
生成优惠券并将优惠券存入Mysql的方法:
#coding:utf-8 import random import string import MySQLdb def gen_charint(filename, width =4, num=5): f = open(filename, 'wb') charint = string.digits + string.letters for i in range(num): verify = [random.choice(charint) for j in range(width)] verify = ''.join(verify) + '\n' f.write(verify) f.close() def store_mysql(filepath): conn = MySQLdb.connect( host="localhost", port=3306, user='root', passwd='root', db='test', charset='utf8' ) cursor = conn.cursor() # 判断表是否存在 cursor.execute('show tables in test') tables = cursor.fetchall() findtables = False for table in tables: if 'coupon' in table: findtables = True # 下面的sql语句中的符号为反引号 # 由于刚开始设置code的字段长度偏小,报错后,调整这里的长度不起作用,查看数据库并未相应改变,需要手动更改数据库该字段长度 if not findtables: cursor.execute(''' CREATE TABLE `coupon24`( `id` INT NOT NULL AUTO_INCREMENT, `coupon` VARCHAR(66) NOT NULL, PRIMARY KEY(`id`)); ''') f = open(filepath, 'rb') for line in f.readlines(): code = line.split() cursor.execute('insert into coupon24 (coupon) VALUES (%s)', code) conn.commit() cursor.close() conn.close() if __name__ == '__main__': filename = 'result24.txt' width = 4 num = 11 gen_charint(filename, width, num) store_mysql(filename)
注意点:
1、用列表生成式生成随机字数和数字,并通过join连接,并注意加上换行符
2、创建表时,表名和字段名均要用反引号,即TAB键上方的那个按键
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