Install dependencies from setup.py

Question

I wonder if as well as .deb packages for example, it is possible in my setup.py I configure the dependencies for my package, and run:

$ sudo python setup.py install 

They are installed automatically. Already researched the internet but all I found out just leaving me confused, things like "requires", "install_requires" and "requirements.txt"

Answer 1

Just create requirements.txt in your lib folder and add all dependencies like this:

gunicorn docutils>=0.3 lxml==0.5a7 

Then create a setup.py script and read the requirements.txt in:

import os thelibFolder = os.path.dirname(os.path.realpath(__file__)) requirementPath = thelibFolder + '/requirements.txt' install_requires = [] # Here we'll get: ["gunicorn", "docutils>=0.3", "lxml==0.5a7"] if os.path.isfile(requirementPath):     with open(requirementPath) as f:         install_requires = f.read().splitlines() setup(name="yourpackage", install_requires=install_requires, [...]) 

The execution of python setup.py install will install your package and all dependencies. Like @jwodder said it is not mandatory to create a requirements.txt file, you can just set install_requires directly in the setup.py script. But writing a requirements.txt file is a best practice.

In the setup function you also have to set version, packages, author, etc, read the doc for a complete example: https://docs.python.org/3/distutils/setupscript.html

You package dir will look like this:

├── mypackage │   ├── mypackage │   │   ├── __init__.py │   │   └── mymodule.py │   ├── requirements.txt │   └── setup.py 

Answer 2

Another possible solution

try:     # for pip >= 10     from pip._internal.req import parse_requirements except ImportError:     # for pip <= 9.0.3     from pip.req import parse_requirements  def load_requirements(fname):     reqs = parse_requirements(fname, session="test")     return [str(ir.req) for ir in reqs]  setup(name="yourpackage", install_requires=load_requirements("requirements.txt"))