随机数与随机字符串
时间:2010-12-16 来源:sun5411
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]
random的函数还有很多,此处不一一列举,
参考资料: http://docs.python.org/lib/module-random.html
>>> 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]
random的函数还有很多,此处不一一列举,
参考资料: http://docs.python.org/lib/module-random.html
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