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Could not find module in split namespace

I am working with Python 3.3.1 64-bit on Ubuntu 13.04 64-bit on Eclipse 4.3 64 bit with Pydev 2.7.6 on virtualenv . I have a project in the following directory structure.

 Dictionary | ---------------------------- | | src test | | petaapan petaapan | | | | __init__.py logging __init__.py logging | | | | __init__.py mplogging.py __init__.py test_mplogging.py

When I try to run test_mplogging.py using pytest as a test runner, I get the following results:

 pydev debugger: starting ============================= test session starts ============================== platform linux -- Python 3.3.1 -- pytest-2.3.5 plugins: pep8, cache collected 0 items / 1 errors ==================================== ERRORS ==================================== ______________________ ERROR collecting test_mplogging.py ______________________ File "/home/jonathan/UC/Git Repositories/isiiwesuu/Dictionary/tests/petaapan/logging/test_mplogging.py", line 11 in <module> > import petaapan.logging.mplogging as ml E ImportError: No module named 'petaapan.logging.mplogging'

My sys.path has Dictionary/test before Dictionary/src , so the test tree is searched first, and it looks like the import was unsuccessful with regular packages.

My next attempt was to do the same using namespace packages, so I deleted all the __init__.py files and got the following results:

 pydev debugger: starting ============================= test session starts ============================== platform linux -- Python 3.3.1 -- pytest-2.3.5 plugins: pep8, cache collected 0 items / 1 errors ==================================== ERRORS ==================================== ______________________ ERROR collecting test_mplogging.py ______________________ File "/home/jonathan/UC/Git Repositories/isiiwesuu/Dictionary/tests/petaapan/logging/test_mplogging.py", line 11 in <module> > import petaapan.logging.mplogging as ml File "/home/jonathan/UC/Git Repositories/isiiwesuu/Dictionary/tests/petaapan/logging/<frozen importlib._bootstrap>", line 1564 in _find_and_load > ??? File "/home/jonathan/UC/Git Repositories/isiiwesuu/Dictionary/tests/petaapan/logging/<frozen importlib._bootstrap>", line 1522 in _find_and_load_unlocked > ??? File "/home/jonathan/UC/Git Repositories/isiiwesuu/Dictionary/tests/petaapan/logging/<frozen importlib._bootstrap>", line 1476 in _find_module > ??? File "/home/jonathan/isiiwesuu/lib/python3.3/site-packages/_pytest/assertion/rewrite.py", line 68 in find_module > fd, fn, desc = imp.find_module(lastname, path) File "/home/jonathan/isiiwesuu/lib/python3.3/imp.py", line 197 in find_module > "not {}".format(type(name))) E RuntimeError: 'list' must be None or a list, not <class 'str'> =========================== 1 error in 0.49 seconds ============================

Here is the test_mplogging.py relevant parts:

 import logging from os import getcwd from multiprocessing import Queue, Process import petaapan.logging.mplogging as ml

Can anyone suggest what I need to do in this situation?

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As I can see, you have petaapan.logging.mplogging under Dictionary/src , but not under Dictionary/test .

I believe that the interpreter parses petaapan from the import statement and finds it in Dictionary/test , and then suggests that it is the module you are referencing. But after that, he cannot find mplogging in Dictionary/test/petaapan/logging (in the volume of the detected module) and thereby throws an exception.

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Source: https://habr.com/ru/post/1493753/

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