python 中的相对进口，我不知道有多少次

Question

I have seen these sites:

python relative import example code does not work

Relative imports for the billionth time

https://peps.python.org/pep-0328/

Python packages: relative imports

Relative imports in Python

and loads more that I did not show, but they (The answers/The code) just don't work for some reason to relatively import other Python 'modules'. And for always, I have this forever-recurring error: ImportError: attempted relative import with no known parent package .

My directory structure looks like this:

program/
|_ main.py
|_ lib/
    |_ __init__.py
    |_ module1.py
    |_ module2.py
    |_ module3.py

In main.py:

from .lib.module1 import do_this
print('Imported')

In module1.py:

def do_this():
    print('I did it')

I'm using Linux to do this, but it just doesn't work!!!

EDIT:

I don't want to have to do python3 -m <module> main.py And apparently it still does not work without the dot.

Answer 1

I've had similar issues and I've created an experimental new import library ultraimport that allows to do file system based imports to solve your issue.

In your main.py you would then write:

import ultraimport
do_this = ultraimport('__dir__/lib/module1.py', 'do_this')
print('Imported')

and it will always work, no matter how you run your code.