Python生成随机数


随机整数:

>>> import random
>>> random.randint(0,99)

21

随机选取0到100间的偶数:


>>> import random
>>> random.randrange(0, 101, 2)

42

随机浮点数:

>>> import random
>>> random.random()

0.85415370477785668

>>> random.uniform(1, 10)

5.4221167969800881

随机字符:

>>> import random
>>> random.choice('abcdefg&#%^*f')

'd'

多个字符中选取特定数量的字符:

>>> import random


random.sample('abcdefghij',3)

['a', 'd', 'b']

多个字符中选取特定数量的字符组成新字符串:

>>> import random
>>> import string
>>> string.join(random.sample(['a','b','c','d','e','f','g','h','i','j'], 3)).r

eplace(" ","")
'fih'

随机选取字符串:

>>> import random

>>> random.choice ( ['apple', 'pear', 'peach', 'orange', 'lemon'] )


'lemon'

洗牌:

>>> import random
>>> items = [1, 2, 3, 4, 5, 6]
>>> random.shuffle(items)
>>> items

[3, 2, 5, 6, 4, 1]

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