numpy add

Summary: in this tutorial, you’ll learn how to use the numpy add() function or the + operator to add two equal-sized arrays.

Introduction to the Numpy add() function #

The + or add() function of two equal-sized arrays perform element-wise additions. It returns the sum of two arrays, element-wise.

Let’s take some examples of using the + operator and add() function.

The following example uses the + operator to add two 1-D arrays:

import numpy as np

a = np.array([1, 2])
b = np.array([2, 3])

c = a + b
print(c)Code language: Python (python)

Output:

[3 5]Code language: Python (python)

How it works.

First, create two 1D arrays with two numbers in each:

a = np.array([1, 2])
b = np.array([2, 3])Code language: Python (python)

Second, add the array a with b and assign the result to the variable c:

c = a + bCode language: Python (python)

The + adds each element of array a with the corresponding element in the array b together:

[1+2, 2+4] = [3,5]Code language: Python (python)

Similarly, you can use the add() function to add two 1D arrays like this:

import numpy as np

a = np.array([1, 2])
b = np.array([2, 3])

c = np.add(a, b)

print(c)Code language: Python (python)

Output:

[3 5]Code language: Python (python)

The following example uses the + operator to add two 2D arrays:

import numpy as np

a = np.array([[1, 2], [3, 4]])
b = np.array([[5, 6], [7, 8]])

c = a + b
print(c)Code language: Python (python)

Output:

[[ 6  8]
 [10 12]]Code language: Python (python)

In this example, the + operator performs element-wise addition like this:

[[ 1+5  2+6]
 [3+7 4+8]]Code language: Python (python)

Likewise, you can use the add() function to add two 2D arrays:

import numpy as np

a = np.array([[1, 2], [3, 4]])
b = np.array([[5, 6], [7, 8]])

c = np.add(a, b)
print(c)Code language: Python (python)

Output:

[[ 6  8]
 [10 12]]Code language: Python (python)

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