When building Python packages using setuptools, you typically manually set the upcoming package version in setup.py. For my use case, I found it better to provide the version number on the command line such as this:

python3 setup.py sdist bdist_wheel --version=1.0.0

setuptools isn’t very fond of command line parameters, so I made a quick-n-dirty hack to work around this limitation:

#!/usr/bin/env python
import sys

from setuptools import setup, find_packages

# Quick 'n dirty workaround for being able to provide "--version=1" on the command line when building the app
number_of_arguments = len(sys.argv)
version_parameter = sys.argv[-1]
version = version_parameter.split("=")[1]
sys.argv = sys.argv[0:number_of_arguments-1]

with open('requirements.txt') as f:
    requirements = f.read().splitlines()

setup(name='my-app',
      version=version,
      description='Test',
      author='John Doe',
      author_email='john@doe',
      packages=find_packages(),
      install_requires=requirements,
      data_files=[('.',['requirements.txt'])]
      })