• Difficulty Level : Medium
• Last Updated : 28 Nov, 2018

`numpy.add()` function is used when we want to compute the addition of two array. It add arguments element-wise. If shape of two arrays are not same, that is `arr1.shape != arr2.shape`, they must be broadcastable to a common shape (which may be the shape of one or the other).

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

Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning - Basic Level Course

Parameters :
arr1 : [array_like or scalar] Input array.
arr2 : [array_like or scalar] Input array.
out : [ndarray, optional] A location into which the result is stored.
-> If provided, it must have a shape that the inputs broadcast to.
-> 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 sum of arr1 and arr2, element-wise. Returns a scalar if both arr1 and arr2 are scalars.

Code #1 : Working

 `# Python program explaining``# numpy.add() function``# when inputs are scalar`` ` `import` `numpy as geek``in_num1 ``=` `10``in_num2 ``=` `15`` ` `print` `(``"1st Input  number : "``, in_num1)``print` `(``"2nd Input  number : "``, in_num2)``   ` `out_num ``=` `geek.add(in_num1, in_num2) ``print` `(``"output number after addition  : "``, out_num) `

Output :

```1st Input  number :  10
2nd Input  number :  15
output number after addition  :  25
```

Code #2 :

 `# Python program explaining``# numpy.add() function``# when inputs are array`` ` `import` `numpy as geek`` ` `in_arr1 ``=` `geek.array([[``2``, ``-``7``, ``5``], [``-``6``, ``2``, ``0``]])``in_arr2 ``=` `geek.array([[``5``, ``8``, ``-``5``], [``3``, ``6``, ``9``]])``  ` `print` `(``"1st Input array : "``, in_arr1) ``print` `(``"2nd Input array : "``, in_arr2) ``   ` `out_arr ``=` `geek.add(in_arr1, in_arr2) ``print` `(``"output added array : "``, out_arr) `

Output :

```1st Input array :  [[ 2 -7  5]
[-6  2  0]]
2nd Input array :  [[ 5  8 -5]
[ 3  6  9]]
output added array :  [[ 7  1  0]
[-3  8  9]]
```

My Personal Notes arrow_drop_up