Python: 'ModuleNotFoundError' when trying to import file from same directory

Question

Running Python 3.10. I have three files in the same directory named Chess, one of which is a __init __.py to make sure it's considered a module.

In one file, ChessMain.py I have a line: from Chess import ChessEngine

When I run the file, I get the ModuleNotFoundError: No module named 'Chess' error.

Sorry if this is a dumb import question, but I can't seem to figure out what I'm doing wrong.

It depends on how and where you are calling your script. Right now, Python looks for a module Chess and try to import. If you are running inside Chess , then that folder|module doesn’t exist and thus error. Either call your script outside Chess,cd .. && python Chess/ChessMain.py Or use set PYTHONPATH to tell Python where it should look — Prayson W. Daniel
– Prayson W. Daniel, Commented Jan 17, 2022 at 6:04

TwoFace · Accepted Answer · 2022-01-17 05:47:12Z

If they are in the same directory then you should be able to import a class or function from the file based off of its name:

from Chess import <class-name>

If that doesn't work, you can try (as others have said):

from .Chess import <class-name>

Or you can try:

from sys import path path.append(<absolute-path-to-your-directory>) from Chess import <class-name>

The first example worked fine for me in python 3.7.3.

It is recommended not to messy with sys.path. Use PYTHONPATH=path\to\directory python main.py
but sometimes you don't have control over environment variables.

GC 13 · Accepted Answer · 2022-04-22 11:04:45Z

Let's say, this is my directory content

\_ module_1.py \_ module_2.py \_ main.py

And if I want to import it into my main.py file, I simply use

import module_1

2 Answers 2