pytest plugin to check source code against PEP8 requirements
py.test plugin for checking PEP8 source code compliance using the pep8 module.
easy_install pytest-pep8 # or pip install pytest-pep8
and then type:
to activate source code checking. Every file ending in .py will be discovered and checked, starting from the command line arguments. For example, if you have a file like this:
# content of myfile.py somefunc( 123,456)
you can run it with:
$ py.test --pep8 =========================== test session starts ============================ platform linux2 -- Python 2.6.5 -- pytest-2.0.1.dev1 pep8 ignore opts: (performing all available checks) collecting ... collected 1 items myfile.py F ================================= FAILURES ================================= ________________________________ PEP8-check ________________________________ /tmp/doc-exec-20/myfile.py:2:10: E201 whitespace after '(' somefunc( 123,456) ^ /tmp/doc-exec-20/myfile.py:2:14: E231 missing whitespace after ',' somefunc( 123,456) ^ ========================= 1 failed in 0.01 seconds =========================
In the testing header you will always see the list of pep8 checks that are ignored (non by default). For the meaning of these error and warning codes, see the error output when running against your files or checkout pep8.py.
Configuring PEP8 options per-project
You may configure PEP8-checking options for your project by adding an pep8ignore entry to your pytest.ini or setup.cfg file like this:
# content of pytest.ini [pytest] pep8ignore = E201 E231
This would prevent complaints about some whitespace issues (see above). Rerunning it with the above example will now look better:
$ py.test -q --pep8 collecting ... collected 1 items . 1 passed in 0.01 seconds
Running PEP8 checks and no other tests
You can also restrict your test run to only perform “pep8” tests and not any other tests by typing:
py.test --pep8 -k pep8
This will only run tests that are marked with the “pep8” keyword which is added for the pep8 test items added by this plugin.
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