Ignoring portions of code with the Python code formatter Black

To make Black ignore a specific portion of your code, you can use the # fmt: off and # fmt: on comments.

Follow these steps:

1. Add # fmt: off before the section you want Black to ignore.
2. Write your code (the portion you don’t want Black to format).
3. Add # fmt: on after the section you want Black to ignore.

Example:

import numpy as np

# fmt: off
matrix = np.array([
    [1, 2, 3],
    [4, 5, 6],
    [7, 8, 9]
])
# fmt: on

def some_function():
    pass

In this example, the matrix array will not be formatted by Black, while the rest of the code will follow Black’s formatting rules.