随机数

import  random print random.random() print random.randrange(1,10) print random.randint(1,10) 验证码 import random checkcode='' for i in range(1,5):  if i==random.randint(1,4):         　　temp=chr(random.randint(65,121))     else:         　　temp=random.randint(1,9)     checkcode+=str(temp) print checkcode