Python numpy.matlib.empty()用法及代码示例

numpy.matlib.empty()函数返回给定形状和类型的新矩阵，而无需初始化条目。

用法： numpy.matlib.empty(shape, dtype = None, order = ‘C’)

参数：

shape  :[int or tuple of int] Shape of the empty matrix.

dtype  :[data-type, optional] Desired output data-type.

order  :[{‘C’, ‘F’}, optional] Whether to store multi-dimensional data in row-major (C-style) or column-major (Fortran-style) order in memory.

Return :[matrix] A new matrix of given shape and type, without initializing entries.

代码1：

# Python program explaining 
# numpy.matlib.empty() function 
  
# importing numpy as geek  
# and importing matlib module   
import numpy as geek 
import numpy.matlib 
  
# filled with random data 
gfg = geek.matlib.empty((2, 2)) 
  
# output will be random 
print (gfg)

输出：

[[  6.91957648e-310   1.90383493e-316]
 [  6.91957669e-310   5.30409905e-317]]

代码2：

# Python program explaining 
# numpy.matlib.empty() function 
  
# importing numpy as geek  
# and importing matlib module   
import numpy as geek 
import numpy.matlib 
  
# filled with random data 
gfg = geek.matlib.empty((2, 2), dtype = int) 
  
# output will be random 
print (gfg)

输出：

[[139855860099992        40294208]
 [139855825297024        10730496]]

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注：本文由纯净天空筛选整理自sanjoy_62大神的英文原创作品 numpy.matlib.empty() function | Python。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。