I made a very simple python package by following the packaging guide:
tester
├── A.py
├── B.py
└── __init__.py
The contents of A.py are simply:
import B
__init__.py and B.py are empty files.
I uploaded the package to testpypi and installed it in a virtual environment. I started first by checking if it works by making a simple test.py file:
from tester import A
Then I try to run that file:
(scratch-venv) [ccn@sy337b4 scratch-box]$ python test.py
Traceback (most recent call last):
File "/home/ccn/scratch-box/test.py", line 1, in <module>
from tester import A
File "/home/ccn/scratch-box/scratch-venv/lib/python3.9/site-packages/tester/A.py", line 1, in <module>
import B
ModuleNotFoundError: No module named 'B'
I'm confused because when I was developing the package running python A.py never caused an error, but now when I'm importing A it doesn't work any more.
(within the venv, aka: client using package) I was able to fix this by changing the contents of A.py to :
from tester import B
But that's not a solution because when I go back to developing the package I get this error when running python A.py
Traceback (most recent call last):
File "/home/ccn/tester_package/src/tester/A.py", line 1, in <module>
from tester import B
ModuleNotFoundError: No module named 'tester'
Finally for full context I will post the structure of the package. I am developing in src/tester
.
├── build
│ ├── bdist.linux-x86_64
│ └── lib
│ └── tester
│ ├── A.py
│ ├── B.py
│ └── __init__.py
├── dist
│ ├── example_pkg_2_cuppajoeman-0.0.1-py3-none-any.whl
│ └── example-pkg-2-cuppajoeman-0.0.1.tar.gz
├── LICENSE
├── pyproject.toml
├── README.md
├── setup.cfg
└── src
├── example_pkg_2_cuppajoeman.egg-info
│ ├── dependency_links.txt
│ ├── PKG-INFO
│ ├── SOURCES.txt
│ └── top_level.txt
└── tester
├── A.py
├── B.py
├── __init__.py
└── __pycache__
└── B.cpython-39.pyc
9 directories, 17 files
If I remember correctly, in tester/a.py you should have either one of those:
from . import B
from tester import B
import tester.B