Python NumPy diag() is a function is used to find Numpy diagonal and it is used to extract and create a diagonal array from the given array.

**Numpy diag()** is an inbuilt NumPy function that extracts and construct a diagonal array. The diag() function contains two parameters and is used to extract and create a diagonal array from the given array.

Python numpy diag() function extracts and construct a diagonal array. The diag() function is defined under numpy, which can be imported as import numpy as np, and we can create multidimensional arrays and derive other mathematical statistics with the help of numpy, which is a library in Python. Python diag() name is also derived from diagonal.

`numpy.diag(arr,k) `

In this tutorial, youâ€™re going to learn a variety of Python tricks that you can use to write your Python code in a more readable and efficient way like a pro.

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