module not found in a custom python package

Question

I am trying to make a package in Python. I have the following file and directory structure:

.
├── ds
│   ├── __init__.py
│   ├── __main__.py
│   ├── package_a
│   │   ├── __init__.py
│   │   └── package_a_b
│   │       └── __init__.py
│   └── settings.py
├── install.sh
├── LICENSE
├── Manifest.in
├── README.md
└── setup.py

The code is the following:

ds/__init__.py

Empty file

ds/__main__.py

from package_a import name_a
from package_a.package_a_b import name_a_b
from settings import config

def main():
    print(name_a)
    print(config)    

ds/package_a/__init__.py

name_a = 'name_a'

ds/package_a_b/__init__.py

name_a_b = 'name_a_b'

setup.py

import pathlib
from setuptools import setup

HERE = pathlib.Path(__file__).parent

README = (HERE / "README.md").read_text()

setup(
    name="ds",
    version="2.0.0",
    long_description=README,
    long_description_content_type="text/markdown",
    license="MIT",
    classifiers=[
        "License :: OSI Approved :: MIT License",
        "Programming Language :: Python :: 3",
        "Programming Language :: Python :: 3.8",
    ],
    packages=["ds"],
    #packages=find_packages(exclude=("tests",)),
    include_package_data=True,
    entry_points={
        "console_scripts": [
            "ds=ds.__main__:main",
        ]
    },
)

In order to install I following these steps

rm -rf dist
pip uninstall ds
python setup.py bdist_wheel
pip install dist/ds-2.0.0-py3-none-any.whl --force-reinstall
ds

the problem is that when I execute ds I got the following message

ModuleNotFoundError: No module named 'settings'

if I comment all about settings then I get this error:

ModuleNotFoundError: No module named 'package_a'

So python is not finding the packages.

How can I solve this?

Answer 1

Your package inside __main__.py is available under the name ds.

from ds.package_a import name_a
from ds.package_a.package_a_b import name_a_b
from ds.settings import config