Numpy ndarray.setfield()函数| Python

numpy.ndarray.setfield()函数将值放入由数据类型定义的字段中的指定位置。将 val 放入由 dtype 定义的字段中，并将开始偏移字节放入该字段中。

Syntax : numpy.ndarray.setfield(val, dtype, offset=0)

Parameters :
val : [object] Value to be placed in field.
dtype : [dtype object] Data-type of the field in which to place val.
offset : [int, optional] The number of bytes into the field at which to place val.

Return : None.

代码#1：

# Python program explaining
# numpy.ndarray.setfield() function
  
# importing numpy as geek 
import numpy as geek 
            
arr = geek.eye(4)
            
arr.setfield(4, geek.int32)
gfg = arr.getfield(geek.int32)
      
print(gfg)

输出 ：

[[4 4 4 4]
 [4 4 4 4]
 [4 4 4 4]
 [4 4 4 4]]

代码#2：

# Python program explaining
# numpy.ndarray.setfield() function
  
# importing numpy as geek 
import numpy as geek 
            
arr = geek.eye(2)
            
arr.setfield(2, geek.int32)
gfg = arr.getfield(geek.int32)
      
print(gfg)

输出 ：

[[2 2]
 [2 2]]