Python numpy.mask_indices()用法及代码示例

numpy.mask_indices()函数在给定屏蔽函数的情况下返回索引以访问(n，n)数组。

用法： numpy.mask_indices(n, mask_func, k = 0)

参数：

n  :[int] The returned indices will be valid to access arrays of shape (n, n).

mask_func  :[callable] A function whose call signature is similar to that of triu, tril.

k  :[scalar] An optional argument which is passed through to mask_func.

Return :[tuple of arrays] The n arrays of indices corresponding to the locations where mask_func(np.ones((n, n)), k) is True.

代码1：

# Python program explaining 
# numpy.mask_indices() function 
  
# importing numpy as geek  
import numpy as geek 
  
gfg = geek.mask_indices(3, geek.triu) 
  
print (gfg)

输出：

(array([0, 0, 0, 1, 1, 2]), array([0, 1, 2, 1, 2, 2]))

代码2：

# Python program explaining 
# numpy.mask_indices() function 
  
# importing numpy as geek  
import numpy as geek 
  
gfg = geek.mask_indices(3, geek.triu, 1) 
  
print (gfg)

输出：

(array([0, 0, 1]), array([1, 2, 2]))

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