A simple program which checks Python source files for errors.
Pyflakes analyzes programs and detects various errors. It works by
parsing the source file, not importing it, so it is safe to use on
modules with side effects. It's also much faster.
It is [available on PyPI]
and it supports all active versions of Python: 2.7 and 3.4 to 3.8.
It can be installed with::
$ pip install --upgrade pyflakes
* Be sure to install it for a version of Python which is compatible
with your codebase: for Python 2, pip2 install pyflakes and for
Python3, pip3 install pyflakes.
* You can also invoke Pyflakes with ``python3 -m pyflakes . or
python2 -m pyflakes .`` if you have it installed for both versions.
* If you require more options and more flexibility, you could give a
look to Flake8_ too.
Pyflakes makes a simple promise: it will never complain about style,
and it will try very, very hard to never emit false positives.
Pyflakes is also faster than Pylint_. This is
largely because Pyflakes only examines the syntax tree of each file
individually. As a consequence, Pyflakes is more limited in the
types of things it can check.
If you like Pyflakes but also want stylistic checks, you want
flake8_, which combines
Pyflakes with style checks against
`PEP 8`_ and adds
per-project configuration ability.
Share your feedback and ideas: `subscribe to the mailing-list
Issues are tracked on [GitHub].
Patches may be submitted via a `GitHub pull request`_ or via the mailing
if you prefer. If you are comfortable doing so, please `rebase your
so they may be applied to master with a fast-forward merge, and each commit
a coherent unit of work with a well-written log message. If you are not
comfortable with this rebase workflow, the project maintainers will be
rebase your commits for you.
All changes should include tests and pass flake8_.
:alt: GitHub Actions build status
.. _Pylint: https://www.pylint.org/
.. _flake8: https://pypi.org/project/flake8/
.. _`PEP 8`: https://www.python.org/dev/peps/pep-0008/
.. _`rebase your changes`:
.. _`GitHub pull request`: https://github.com/PyCQA/pyflakes/pulls
Please see `NEWS.rst
Configuration Switches (platform-specific settings discarded)
PY38 ON Build using Python 3.8
PY39 OFF Build using Python 3.9
Package Dependencies by Type
Distribution File Information
3bb3a3f256f4b7968c9c788781e4ff07dce46bdf12339dcda61053375426ee2e 69704 pyflakes-2.4.0-py2.py3-none-any.whl
Ports that require python-pyflakes:py38