relative paths in python not finding parent package

Question

I have a file system like this at the moment.

app
 |--__init__.py (empty)
 |    
 |--domain
 |    |--__init__.py (empty)
 |    |--model.py
 |    |--questionmatcher.py
 |
 |--interface
 |    |--__init__.py (empty)
 |    |--basiccli.py
 |    |--userinterface.py
 |
 |--parser
 |    |--__init__.py (empty)
 |    |--json_loader.py
 |    |--parsing.py
 |
 |--testfiles
 |    |--__init__.py (empty)
 |    |--testsuite.py

I am trying to run the testsuite.py which will need to import classes from various files in directory.

I have tried this structure:

import unittest
from ..parser.json_loader import JsonLoader
from ..parser.parsing import get_vectors, parseThreadsFromFile, getPostsFromThreads
from ..domain import UniversalEncoder, SentBERT

class TestParsing(unittest.TestCase):
    def test(self):
        pass


class TestJson(unittest.TestCase):
    def test(self):
        pass


class TestModelEncoders(unittest.TestCase):
    def test(self):
        pass



if __name__ == "__main__":

    unittest.main()

However when I go to run the test I get:

    from ..parser.json_loader import JsonLoader
ImportError: attempted relative import with no known parent package

EDIT:

I have tried

from parser.json_loader import JsonLoader

but now I get

    from parser.json_loader import JsonLoader
ModuleNotFoundError: No module named 'parser.json_loader'; 'parser' is not a package

Does this answer your question? [Relative imports in Python 3](https://stackoverflow.com/questions/16981921/relative-imports-in-python-3) — mkrieger1, Aug 17 '21 at 08:57
@mkrieger1 Thanks, but that hasn't fixed it. I tried removing the relative imports but it gives me ``ModuleNotFoundError: No module named 'parser.json_loader'; 'parser' is not a package``. — Jeff Jefferson, Aug 17 '21 at 09:01
What command are you typing to run the `testsuite.py` script? — mkrieger1, Aug 17 '21 at 09:03
also tried changing directory to ``testfiles`` and just running ``python testsuite.py`` — Jeff Jefferson, Aug 17 '21 at 09:06
You need to import `app.parser.json_loader`, not `parser.json_loader`. — mkrieger1, Aug 17 '21 at 09:07
@mkrieger1 Tried that and got ``from app.parser.json_loader import JsonLoader ModuleNotFoundError: No module named 'app'`` — Jeff Jefferson, Aug 17 '21 at 09:08
I think you should run `python3 -m app.testfiles.testsuite` while in the parent directory of `app`. I'm not sure if the `python` comand uses Python 3 in your case. — mkrieger1, Aug 17 '21 at 09:11
@mkrieger1 I have made python default to using python 3, so ``python3 ..`` does not work for me — Jeff Jefferson, Aug 17 '21 at 09:13
@mkrieger1 Thanks! that did the trick. However, why is it ``python -m app.testfiles.testsuite`` and not ``python app\testfiles\testsuite.py``? — Jeff Jefferson, Aug 17 '21 at 09:16
I can't really explain it now. It should be explained in the answers to the other question I've linked. — mkrieger1, Aug 17 '21 at 09:17

score 0 · Answer 1 · answered Aug 17 '21 at 09:02

0

you can add this package to your PYTHONPATH environmental variable:

export PYTHONPATH=$PYTHONPATH:/path/to/parser

answered Aug 17 '21 at 09:02

astromonkey

443
2
5
11

I'd rather not go adding things like that. It shouldn't be this hard to import packages. But it seems like reading a view of the other similar stackoverflow questions, people are having big troubles with understanding relative imports – Jeff Jefferson Aug 17 '21 at 09:04

relative paths in python not finding parent package

1 Answers1