Problem:
Running into the following error when trying to run a Pytest test suite in a Python application via the pytest command:
File "/usr/lib/python2.7/dist-packages/_pytest/helpconfig.py", line 94, in pytest_cmdline_parse
config = outcome.get_result()
File "/usr/lib/python2.7/dist-packages/pluggy/callers.py", line 81, in get_result
_reraise(*ex) # noqa
File "/usr/lib/python2.7/dist-packages/pluggy/callers.py", line 187, in _multicall
res = hook_impl.function(*args)
File "/usr/lib/python2.7/dist-packages/_pytest/config/__init__.py", line 739, in pytest_cmdline_parse
self.parse(args)
File "/usr/lib/python2.7/dist-packages/_pytest/config/__init__.py", line 947, in parse
self._preparse(args, addopts=addopts)
File "/usr/lib/python2.7/dist-packages/_pytest/config/__init__.py", line 889, in _preparse
self.pluginmanager.consider_preparse(args)
File "/usr/lib/python2.7/dist-packages/_pytest/config/__init__.py", line 499, in consider_preparse
self.consider_pluginarg(parg)
File "/usr/lib/python2.7/dist-packages/_pytest/config/__init__.py", line 524, in consider_pluginarg
self.import_plugin(arg, consider_entry_points=True)
File "/usr/lib/python2.7/dist-packages/_pytest/config/__init__.py", line 574, in import_plugin
six.reraise(ImportError, new_exc, tb)
File "/usr/lib/python2.7/dist-packages/_pytest/config/__init__.py", line 565, in import_plugin
__import__(importspec)
ImportError: Error importing plugin "sklearn.tests.random_seed": No module named sklearn.tests.random_seed
Solution:
There are a number of potential causes for this issue, the most likely being that the PYTHONPATH environment variable not being defined in your ~/.profile file. There are two potential solutions you can try here:
- Define the
PYTHONPATHenvironment variable by running the commandexport PYTHONPATH=<your_user_defined_module_path_here>. Then retry runningpytest - Add the prefix
python -mbefore the usualpytestcommand like so:python -m pytest
Conclusion
Well this is the end of the article, if you have any questions or concerns please feel free to post a comment in this article and I will get back to you if I find the time.
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