random模块

>>> import random 　　#导入random 随机模块
>>> random.randint(1,100) #随机显示 1-100中的一个数字
89

>>> random.randrange(1,3)#随机显示 1-3中的一个数字 ,不包含3
1

>>> random.choice('adsjiojl@#2') #返回一个随机字符， 验证码时可能可以用到。
'#'

>>> random.sample('abddsafasfl@#^',3)返回3个随机字符，参数3可以改变。
['^', 'b', 'd']

>>> import string　#导入字符串模块
>>> string.digits　　#数字
'0123456789'
>>> string.ascii_letters #大小写字母
'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
>>> string.hexdigits　　#16进制数字和字符
'0123456789abcdefABCDEF'
>>> string.ascii_lowercase　　#小写字母
'abcdefghijklmnopqrstuvwxyz'
>>> string.ascii_lowercase +string.digits  #小写字母+数字
'abcdefghijklmnopqrstuvwxyz0123456789'
>>> string.punctuation　　#特殊字符
'!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'

>>> s = string.ascii_lowercase +string.digits  #小写字母+数字 赋值到s 
>>> random.sample(s,5)  #从 s 生成5位随机验证码
['y', 'r', 'c', 'l', 'f']

>>> ''.join(random.sample(s,5))　　#从 s 生成5位随机验证码，最后用''.join方法连接结果
'qazlv'

>>> d = list(range(100))
>>> d
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99]
>>> random.shuffle(d)　　#随机洗牌，打乱顺序
>>> d
[63, 26, 22, 73, 60, 71, 44, 56, 29, 49, 61, 1, 28, 55, 37, 3, 76, 5, 38, 88, 11, 40, 18, 57, 84, 17, 80, 68, 74, 93, 10, 91, 25, 23, 92, 42, 79, 43, 21, 35, 19, 65, 78, 81, 95, 75, 12, 85, 83, 77, 46, 54, 27, 41, 66, 69, 82, 90, 52, 9, 51, 36, 13, 2, 72, 16, 33, 53, 6, 39, 4, 34, 98, 47, 87, 14, 48, 24