import random print(random.random()) #生成0-1的随机数 print(random.randint(1,7)) #生成1-7的随机数,包含1和7 print(random.randrange(1,100,4)) #生成1-100,以4为基数的随机数,如:1,4,8,12,16....等 random.choice("hello world") #从字符串序列中随机生成一个字母,如:h,w,r,l,e等 random.choice(['hello','world','hi','you','java']) print(random.sample([1,3,5,7,9,12],3)) #从序列中随机取3个数,即[1,5,7] print(random.sample('hello world',3))

#洗牌

items=[1,2,3,4,5,6,7] print(items) [1,2,3,4,5,6,7]

random.shuffle(items) print(items) [2,5,7,4,6,3,1]

#生成5位随机验证码

import random checkcode='' for i in range(5): ............current=random.randrange(0,9) ............if current==i: ...............temp=chr(random.randint(65,90)) ............else: ...............temp=random,randint(0,9) ............checkcode+=str(temp) ........print(checkcode)