python-scipyHow do I join two arrays using Python and NumPy?

Joining two arrays using Python and NumPy is done using the np.concatenate() function. It takes a sequence of arrays and combines them into a single array.

Example code

import numpy as np
a = np.array([1, 2, 3])
b = np.array([4, 5, 6])
c = np.concatenate((a, b))
print(c)

Output example

[1 2 3 4 5 6]

The code above contains the following parts:

1. import numpy as np imports the NumPy library into the program.
2. a = np.array([1, 2, 3]) and b = np.array([4, 5, 6]) create two NumPy arrays.
3. np.concatenate((a, b)) joins the two arrays into a single array.
4. print(c) prints the result of the concatenation.

Helpful links

• https://numpy.org/doc/stable/reference/generated/numpy.concatenate.html
• https://www.geeksforgeeks.org/numpy-concatenate-python/

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