numpy.ndarray.flatten


此函数返回折叠为一维的数组的副本。该函数采用以下参数。

ndarray.flatten(order)

这里

序号 参数和描述
1 order 'C' 行主要(默认。'F':列主要'A':以列主要顺序展平,如果a是Fortran在内存中连续,则行主要顺序否则'K':按顺序压扁a发生在记忆中

import numpy as np
a = np.arange(8).reshape(2,4)

print 'The original array is:'
print a
print '\n'  
# default is column-major

print 'The flattened array is:'
print a.flatten()
print '\n'  

print 'The flattened array in F-style ordering:'
print a.flatten(order = 'F')

上述方案的输出如下

The original array is:
[[0 1 2 3]
 [4 5 6 7]]

The flattened array is:
[0 1 2 3 4 5 6 7]

The flattened array in F-style ordering:
[0 4 1 5 2 6 3 7]