Python pip install sub-package from own package

Question

I\'d like to install some special sub-package from a package.

For example, I want to create package with pkg_a and pkg_b. But I want to allow the user to choose which he

Answer 1

If the projects are not installed from an index such as PyPI, it is not possible to take advantage of the install_requires feature. Something like this could be done instead:

.
├── NmspcPing
│   ├── nmspc.ping
│   │   └── __init__.py
│   └── setup.py
├── NmspcPong
│   ├── nmspc.pong
│   │   └── __init__.py
│   └── setup.py
└── setup.py

NmspcPing/setup.py (and similarly NmspcPong/setup.py)

import setuptools

setuptools.setup(
    name='NmspcPing',
    version='1.2.3',
    package_dir={'nmspc.ping': 'nmspc.ping'},
    packages=['nmspc.ping'],
)

setup.py

import setuptools

setuptools.setup(
    name='Nmspc',
    version='1.2.3',
    package_dir={
        'nmspc.ping': 'NmspcPing/nmspc.ping',
        'nmspc.pong': 'NmspcPong/nmspc.pong',
    },
    packages=['nmspc.ping', 'nmspc.pong'],
)

This allows to install from the root folder in any of the following combinations:

$ python3 -m pip install .
$ python3 -m pip install ./NmspcPing
$ python3 -m pip install ./NmspcPong
$ python3 -m pip install ./NmspcPing ./NmspcPong