Contents

## Numpy Array – Add a constant to all elements of the array

Adding a constant to a NumPy array is as easy as adding two numbers.

To add a constant to each and every element of an array, use addition arithmetic operator `+`

. Pass array and constant as operands to the addition operator as shown below.

`output = arr + c`

where

`arr`

is a numpy array.`c`

is a constant.`output`

is the resulting numpy array.

## Example

In the following python example, we will add a constant `3`

to an array `arr`

. The resulting array is stored in `output`

and print to the standard output.

**Python Program**

```
import numpy as np
#2D array
arr = (np.arange(8)*2).reshape(2,4)
#print array
print("The array\n", arr)
#adding a constant to all the elemnets of array
output = arr + 3
print("\nAfter adding a constant to all the elemnets of array\n", output)
```

Run **Output**

### Summary

In this Numpy Tutorial of Python Examples, we learned how to add a constant to each of the element in numpy array using addition operator.