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Python中shuffle函数

shuffle() 方法将序列的所有元素随机排序。

下面是语法:

1 import random2 3 random.shuffle (lst )
lst可以是序列或者元组;
 1 >>> import random; 2 >>> indexList=[1,2,4,5,8,6]; 3 >>> indexList 4 [1, 2, 4, 5, 8, 6] 5 >>> random.shuffle(indexList) 6 >>> indexList 7 [1, 2, 4, 5, 8, 6] 8 >>> random.shuffle(indexList) 9 >>> indexList10 [6, 2, 4, 5, 1, 8]11 >>> random.shuffle(indexList)12 >>> indexList13 [2, 1, 4, 5, 6, 8]

 如果是‘range‘类型,则产生错误:

 1 >>> indexList=range(10); 2 >>> type(indexList) 3 <class range> 4 >>> random.shuffle(indexList) 5 Traceback (most recent call last): 6   File "<pyshell#28>", line 1, in <module> 7     random.shuffle(indexList) 8   File "D:\softwareTool\Python\anzhuang_file\lib\random.py", line 272, in shuffle 9     x[i], x[j] = x[j], x[i]10 TypeError: range object does not support item assignment

 

Python中shuffle函数