  # numpy.subtract () in Python

Arrays | NumPy | Python Methods and Functions

`numpy.subtract()` is used when we want to calculate the difference between two arrays. It returns the difference arr1 and arr2 element by element.

Syntax: numpy.subtract (arr1, arr2, /, out = None, *, where = True, casting = ` same_kind `, order =` K `, dtype = None, subok = True [, signature, extobj], ufunc` subtract `)

Parameters:
arr1: [array_like or scalar] 1st Input array.
arr2: [array_like or scalar] 2nd Input array.
dtype: The type of the returned array. By default, the dtype of arr is used.
out: [ndarray, optional] A location into which the result is stored.
- & gt ; If provided, it must have a shape that the inputs broadcast to.
- & gt; If not provided or None, a freshly-allocated array is returned.
where: [array_like, optional] Values ​​of True indicate to calculate the ufunc at that position, values ​​of False indicate to leave the value in the output alone.
** kwargs: Allows to pass keyword variable length of argument to a function. Used when we want to handle named argument in a function.

Return: [ndarray or scalar] The difference of arr1 and arr2, element-wise. Returns a scalar if both arr1 and arr2 are scalars.

Code # 1:

` `

` # Python program explaining # numpy.subtract () function   import numpy as geek in_num1 = 4 in_num2 = 6   print ( "1st Input number:" , in_num1) print ( "2nd Input number:" , in_num2)   out_num = geek.subtract (in_num1, in_num2)  print ( "Difference of two input number:" , out_num)  `

` ` Output:

` 1st Input number: 4 2nd Input number: 6 Difference of two input number: -2 `

Code # 2:

 ` # Python program explaining ` ` # numpy.subtract () function `   ` import ` ` numpy as geek `   ` in_arr1 ` ` = ` ` geek.array ([[` ` 2 ` `, ` ` - ` ` 4 ` `, ` ` 5 ` `], [` ` - ` ` 6 ` `, ` ` 2 ` `, ` ` 0 ` `]]) ` ` in_arr2 ` ` = ` ` geek.array ([[` ` 0 ` ` , ` ` - ` ` 7 ` `, ` ` 5 ` `], [` ` 5 ` `, ` ` - ` ` 2 ` `, ` ` 9 ` `]]) `   ` print ` ` (` ` "1st Input array:" ` `, in_arr1) ` ` print ` ` (` ` "2nd Input array:" ` `, in_arr2) `   ` `  ` out_arr ` ` = ` ` geek.subtract ( in_arr1, in_arr2) ` ` print ` ` (` ` " Output array: "` `, out_arr) `

Output:

` 1st Input array: [[2 -4 5] [-6 2 0]] 2nd Input array: [[0 -7 5] [5 -2 9 ]] Output array: [[2 3 0] [-11 4 -9]] `