Python numpy.matlib.empty()用法及代碼示例

numpy.matlib.empty()函數返回給定形狀和類型的新矩陣，而無需初始化條目。

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

參數：

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.

代碼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)

輸出：

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

代碼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)

輸出：

[[139855860099992        40294208]
 [139855825297024        10730496]]

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