[Python] python importlib from subdirectory, module not found

I'v been struggling with importing a sub module. In main.py two modules are imported located under 220_04_070. I'm using importlib since the directory name only consist of numbers. common.py just contains a number of variables.

The problem I get is:

.../220_04_070/unicorn.py", line 1, in <module>
from common import *
ModuleNotFoundError: No module named 'common'.


I can get around by adding a dot in front of common in unicorn.py. But since unicorn is used standalone at other parts I prefer not to do that.

from .common import *


Both main.py and unicorn.py are using common.py. The structure is as below:

|-- main.py
|
|-- 220_04_070
|-- common.py
|-- unicorn.py


main.py

import importlib
uc = importlib.import_module('220_04_070.unicorn')
cm = importlib.import_module('220_04_070.common')

mycorn = uc.unicorn()


unicorn.py

from common import *
class unicorn():
def __init__(self):
None


All is run with python3.12.3 (Ubuntu 24.04).

So, my question is how I should handle this?

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