Python实现简单的验证码模块

 1 import random
 2 #完成5位随机验证码的生成
 3 def valiate1():
 4     string =‘‘
 5     for i in range(5): #设置验证码位数
 6         rand_num = random.randint(0,61) #一共有62种可能的情况
 7         if rand_num < 10:
 8             string += str(rand_num)
 9         elif 10 <= rand_num <= 35:
10             string += chr(rand_num+55) #随机产生A-Z
11         else:
12             string += chr(rand_num+61) #随机产生a-z3
13     return string
14 print(valiate1())
15 #该方法数字，大写字母，小写字母出现的概率相同
16 def valiate2():
17     string =‘‘
18     for i in range(5): #设置验证码位数
19         rand_num = random.randint(0,9)
20         rand_alpha = chr(random.randint(97,122))
21         rand_Alpha = chr(random.randint(65,90))
22         res =random.choice([str(rand_num),rand_alpha,rand_Alpha])
23         string += res
24     return string
25 print(valiate2())