"ImportError: attempted relative import with no known parent package"

I am trying to access a function in package1 from inside package 2

project   |- __init__.py   |- package1     |-__init__.py     |-module1.py   |- package2     |-__init__.py     |-module2.py  

package1/__init __.py

from .module1 import my_function    # I have also tried the following:  # from module1 import my_function  # from module1 import *  # import module1  # and also leaving this file empty  

package2/module2.py

from ..package1 import my_function    # I have also already tried the following:  # from ..package1 import my_function  # import sys  # sys.path.append('.')    # import package1  

https://stackoverflow.com/questions/66838039/importerror-attempted-relative-import-with-no-known-parent-package March 28, 2021 at 11:03AM