What does '# noqa' mean in Python comments?

While searching through a Python project, I found a few lines commented with # noqa.

    import sys
    import some_module   # noqa

What does noqa mean in Python? Is it specific to Python only?

Adding # noqa to a line indicates that the linter (a program that automatically checks code quality) should not check this line. Any warnings that code may have generated will be ignored.

That line may have something that "looks bad" to the linter, but the developer understands and intends it to be there for some reason.

For more information, see the Flake8 documentation for Selecting and Ignoring Violations.

From: stackoverflow.com/q/45346575

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