cannot import name 'a' from 'tools'

I can run test_pkg1.py and test_pkg2.py but when I run test.py Error occurred at test_pkg1.py

Exception has occurred: ImportError cannot import name 'a' from 'tools' (unknown location)

root  ├─ pkg1  │  ├─ tools  │  │  ├─ __init__.py  │  │  └─ a.py  │  ├─ __init__.py.py  │  └─ test_pkg1.py  ├─ pkg2  │  ├─ tools  │  │  ├─ __init__.py  │  │  └─ b.py  │  ├─ __init__.py.py  │  └─ test_pkg2.py  ├─ test.py  └─ d.py    test_pkg1.py      from tools import a      test_pkg2.py     from tools import b      test.py      from pkg2 import test_pkg2     from pkg1 import test_pkg1  

https://stackoverflow.com/questions/66631532/cannot-import-name-a-from-tools March 15, 2021 at 10:10AM