python内置模块-random

print(random.randint(1,10)) 生成随机整数,下限必须小于上限
print(random.randrange(1,10)) 生成随机整数,参数为([start],stop,[step])
random.random()  生成0,1的随机浮点数

随机生成4位验证码:

 1 import random
 2 checkcode = ''
 3 for i in range(4):
 4     current =random.randrange(0,4)
 5     if current == 2:
 6         temp = chr(random.randint(65,90)) #大写字母
 7     elif current != 3:
 8         temp = chr(random.randint(97,122)) #小写字母
 9     else:
10         temp = random.randint(0,9)
11     checkcode += str(temp)
12 print(checkcode)
验证码

 

posted @ 2016-06-08 11:31  张瑞东  阅读(285)  评论(0编辑  收藏  举报