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Each tool has its own method of ignoring errors and warnings.
For example, pylint requires a comment of the form

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PEP8 will not warn on lines with

    # noqa

Additionally, flake8 follows that convention for pyflakes errors,
but pyflakes itself does not.

Finally, an entire file is ignored by flake8 if this line is found
in the file:

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This module's job is to attempt to collect all of these methods into
a single coherent list of error suppression locations.
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