判断输入的验证码是否正确

 1 def check_code():
 2     import random
 3     checkcode = ‘‘
 4     for i in range(4):
 5         current = random.randrange(0, 4)
 6         if current != i:
 7             temp = chr(random.randint(65, 90))
 8         else:
 9             temp = random.randint(0, 9)
10         checkcode += str(temp)
11     return checkcode
12 while True:
13     code = check_code()
14     print(code)
15     v=code.upper()
16     v2=input("请输入验证码：")
17     v3=v2.upper()
18     if v3==v:
19         print("验证成功")
20         break
21     else:
22         print("验证失败")