#随机模块import randomret=random.random()#0-1的随机的浮点数ret1 = random.randint(1,6) # 1-6的整数,1和3能取#print ret1ret2 = random.randrange(1,6)# 1-6的整数,1能取,3不能取#print ret2ret3 = random.choice([11,22])#print ret3ret4 = random.sample([11,22,33,44],2) #随机两个#print ret4#任意范围的浮点型ret5 = random.uniform(1,4)#print ret5item = [1,3,5,7,9]ret6 = random.shuffle(item) #打乱顺序#print ret6#做个小demo,数字和字母双拼的验证码:def v_code():    retd = ""    for i in range(5):        num = random.randint(0,9)        alf = chr(random.randint(65,122)) #随机取到一个字母        s = str(random.choice([num,alf]))        retd+=s    return  retdprint v_code()