如何获得Python数组中一个元素的地址

在这篇文章中，我们将讨论如何获得Python数组中某个特定元素的地址。在Python中，我们可以使用numpy创建数组。Numpy代表了用于创建和处理数组的数字Python。我们必须要导入numpy模块

import numpy as np

创建数组的语法。

np.ndarray([element1,element2,….,element n])

方法1：使用数据

我们可以通过数组索引使用数据来获得地址。

语法:

array[index].data

它将返回存在于给定索引的那个元素的内存。下面给出了同样的实现。

例子： Python代码创建一个10个元素的数组，并访问一些元素的内存

# import numpy module
import numpy as np
  
# create an array of 10 elements
a = np.array([1, 2, 3, 4, 5, 6, 7, 34, 56, 78])
  
# get index 4 element address
print("The element present at 4 th  index - element",
      a[4], ":", a[4].data)
  
# get index 5 element address
print("The element present at 5 th index - element",
      a[5], ":", a[5].data)
  
# get index 1 element address
print("The element present at 1 st index - element",
      a[1], ":", a[1].data)
  
# get index 0 element address
print("The element present at 0 th  index - element",
      a[0], ":", a[0].data)

输出:

The element present at 4 th index – element 5 :

The element present at 5 th index – element 6 :

The element present at 1 st index – element 2 :

The element present at 0 th index – element 1 :

方法2：使用__array_interface__

我们可以通过这个方法获得所有的内存细节，所以显然内存地址也将被返回。

语法:

arr[index].__array_interface__

例子：Python代码获取数组元素的地址细节

# import numpy module
import numpy as np
  
# create an array of 10 elements
a = np.array([1, 2, 3, 4, 5, 6, 7, 34, 56, 78])
  
# get index 4 element address
print("The element present at 4 th  index - element",
      a[4], ":", a[4].__array_interface__)
  
# get index 5 element address
print("The element present at 5 th index - element",
      a[5], ":", a[5].__array_interface__)
  
# get index 1 element address
print("The element present at 1 st index - element",
      a[1], ":", a[1].__array_interface__)
  
# get index 0 element address
print("The element present at 0 th  index - element",
      a[0], ":", a[0].__array_interface__)

输出:

The element present at 4 th index – element 5 : {‘data’: (94734975551568, False), ‘strides’: None, ‘descr’: [(”, ‘<i8’)], ‘typestr’: ‘<i8’, ‘shape’: (), ‘version’: 3, ‘__ref’: array(5)}

The element present at 5 th index – element 6 : {‘data’: (94734975551568, False), ‘strides’: None, ‘descr’: [(”, ‘<i8’)], ‘typestr’: ‘<i8’, ‘shape’: (), ‘version’: 3, ‘__ref’: array(6)}

The element present at 1 st index – element 2 : {‘data’: (94734975551568, False), ‘strides’: None, ‘descr’: [(”, ‘<i8’)], ‘typestr’: ‘<i8’, ‘shape’: (), ‘version’: 3, ‘__ref’: array(2)}

The element present at 0 th index – element 1 : {‘data’: (94734975551568, False), ‘strides’: None, ‘descr’: [(”, ‘<i8’)], ‘typestr’: ‘<i8’, ‘shape’: (), ‘version’: 3, ‘__ref’: array(1)}