随机整数,下限必须小于上限

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>>> import random
>>> random.randint(0,99)
21

随机选取0到100的偶数

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

随机字符

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

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

随机浮点数

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>>> import random
>>> random.random() 
0.85415370477785668
>>> random.uniform(1, 10)
5.4221167969800881

选取特定数量的字符

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>>> import random
random.sample('abcdefghij',3) 
['a', 'd', 'b']

打乱排序

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>>> import random
>>> items = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]
>>> random.shuffle(items)
>>> items
[1, 9, 7, 6, 2, 5, 0, 4, 8, 3]