Python 练习册,每天一个小程序,原题来自Yixiaohan/show-me-the-code
我的代码仓库在Github
目标
做为 Apple Store App 独立开发者,你要搞限时促销,为你的应用生成激活码(或者优惠券),使用 Python 生成 200 个激活码(或者优惠券),并将激活码保存到 MySQL 关系型数据库中。
解决方案
该题目采用 python 中的 PyMySQL
模块 来连接操作MySQL
数据库,代码如下:
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# 将0001题目中随机生成的验证码保存到MySQL数据库
import uuid
import pymysql
# 生成 num 个验证码,每个长度为length,可设置默认长度
def create_num(num, length=16):
result = []
while num > 0:
uuid_id = uuid.uuid4()
# 删去字符串中的'-',取出前length 个字符
temp = str(uuid_id).replace('-', '')[:length]
if temp not in result:
result.append(temp)
num -= 1
return result
# 保存到MySQL数据库
def save_to_mysql(code):
conn = pymysql.connect(
host='127.0.0.1',
port=3306,
user='root',
passwd=None,
db='test')
try:
with conn.cursor() as cursor:
# Create a new record
sql = "INSERT INTO `codes` (`code`) VALUES (%s)"
cursor.execute(sql, code)
# connection is not autocommit by default. So you must commit to save
# your changes.
conn.commit()
with conn.cursor() as cursor:
# Read a single record
sql = "SELECT `id`, `code` FROM `codes` WHERE `code`=%s"
cursor.execute(sql, code)
result = cursor.fetchone()
print(result)
finally:
conn.close()
for code in create_num(200):
save_to_mysql(code)