Python import cannot find module

Question

Brand new to python and can't manage to get my import resolved when I debug my test within vscode.

Project structure:

a/b/c/d/service/functions/s3_proxy.py
a/b/c/d/service/functions/__init__.py

a/b/c/d/service/tests/test_s3_proxy.py
a/b/c/d/service/tests/__init__.py

test_s3_proxy.py

from functions import s3_proxy

I get an error that funcitons module isn't found.

I tried these things:

I tried putting an __init__.py in service
I tried from ..functions import s3_proxy

Is `test_s3_proxy.py` a standalone program? If so, then you need to add `../functions` to the Python path in `sys.path`. You can get that from `os.abspath(os.dirname(__file__)+'/..')`. — Tim Roberts, Apr 25 '23 at 20:12
Did you try `from ..functions import s3_proxy` ? Also, I sometimes use this: ```import sys sys.path.append("..") from functions import s3_proxy``` — Karol Żak, Apr 25 '23 at 20:13
It's meant to house the unit tests for s3_proxy. What makes it a stand alone program? Forgive my python ignorance. — AfterWorkGuinness, Apr 25 '23 at 20:13
@KarolŻak yes I did (had a typo in my question, but tried that) — AfterWorkGuinness, Apr 25 '23 at 20:14
`import sys sys.path.append("..") from functions import s3_proxy` — Karol Żak, Apr 25 '23 at 20:15
@KarolŻak just tried your sys.path.append solution and same result "No module named functions" — AfterWorkGuinness, Apr 25 '23 at 20:20
Does this answer your question? [Relative imports for the billionth time](https://stackoverflow.com/questions/14132789/relative-imports-for-the-billionth-time) — TomServo, Apr 25 '23 at 20:25
I added additional context that the exception occurs when I debug my test within VS code. — AfterWorkGuinness, Apr 26 '23 at 15:35

niCk cAMel · Answer 1 · 2023-04-25T20:25:23.380

Relative imports doesn't work. You need to add the path a/b/c/d/service/functions to your python system path

import os
import sys
path_to_functions = os.path.join(os.path.dirname(__file__), os.pardir, 'functions')
sys.path.append(path_to_functions)
import s3_proxy

or replace path_to_functions with full literal path to the folder functions

path_to_functions = os.path.join('a', 'b', 'c', 'd', 'service', 'functions')

or (to get the from functions import)

path_to_functions = os.path.join(os.path.dirname(__file__), os.pardir)
sys.path.append(path_to_functions)
from functions import s3_proxy

score 0 · Answer 2 · answered Apr 25 '23 at 20:41

0

You can add s3_proxy.py to your modules.

Here is an example snippet.

from functions import s3_proxy
from sys import modules
modules['s3_proxy'] = s3_proxy

From there you can use the s3_proxy module as needed.

answered Apr 25 '23 at 20:41

tcglezen

456
1
4
12

score -1 · Answer 3 · answered Apr 25 '23 at 20:36

-1

Use an absolute path, like this

from [drive letter]:/[example folder]/ functions import s3_proxy

answered Apr 25 '23 at 20:36

Harez

30
5

That won't work to well when it's deployed outside my machine. Absolute paths are generally evil. – AfterWorkGuinness Apr 26 '23 at 15:32

Python import cannot find module

3 Answers3