After updating to new version 2016.2, I am getting
RuntimeWarning: Parent module 'tests' not found while handling absolute import
import unittest
RuntimeWarning: Parent module 'tests' not found while handling absolute import
import datetime as dt
'tests' is a package inside my main app package, and I receive these warnings when I try to execute unit tests inside this folder. This issue only came up after updating to 2016.2. Besides the warnings, the remaining code works fine.
Edit: This is a known issue - https://youtrack.jetbrains.com/issue/PY-20171. They are suggesting to replace utrunner.py in PyCharm installation folder.
This is a known issue introduced with the 2016.2 release. Progress can be followed on the JetBrains website here. According to this page it is due to be fixed in the 2017.1 release. You can follow the utrunner.py workaround that others have mentioned in the meantime - a copy of this file is attached to the linked ticket.
The latest recommendation (Dec. 19, 2016) is to put this line at the top of your unit test script:
from __future__ import absolute_import
__future__ import is only there for fixing a bug in PyCharm. The source code needs no fix, at least in my case. So it seems that following the advice in the accepted answer would be better, since then the source code doesn't need to be touched at all.
from __future__ import absolute_import. If your Python 2.7 code can take it, I prefer to use all the future imports. It would simplify eventual move to Python 3.6.
utrunner.py and replacing the original did not appear to work. Perhaps Pycharm was caching it; I didn't try restarting my machine.
On OS X I've fixed this by replacing
Applications/PyCharm.app/Contents/helpers/pycharm/utrunner.py
with an older version that can be found at http://code.metager.de/source/xref/jetbrains/intellij/community/python/helpers/pycharm/utrunner.py
On Ubuntu 16.04 Bobby's solution also works:
Just replace your local utrunner.py file at
/usr/local/pycharm-edu-3.0/helpers/pycharm/utrunner.py
by the one from the Jetbrains website: http://code.metager.de/source/xref/jetbrains/intellij/community/python/helpers/pycharm/utrunner.py
On Windows 10 Bobby's solution also works:
Just replace your local utrunner.py file at
C:\Program Files (x86)\JetBrains\PyCharm 2016.3\helpers\pycharm
with the one from the Jetbrains website: http://code.metager.de/source/xref/jetbrains/intellij/community/python/helpers/pycharm/utrunner.py
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