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When installing my python package, I want to be able to tell the user about various optional dependencies. Ideally I would also like to print out a message about these optional requirements and what each of them do.
I haven't seen anything yet in the docs of either pip or docutils. Do tools these support optional dependencies?
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Optional dependenciesSetuptools allows you to declare dependencies that are not installed by default. This effectively means that you can create a “variant” of your package with a set of extra functionalities.
The items listed in setup_requires get implicitly installed whenever you execute the setup.py but one of the common ways that the setup.py is executed is via another tool, such as pip , who is already managing dependencies.
Typically the requirements. txt file is located in the root directory of your project. Notice we have a line for each package, then a version number. This is important because as you start developing your python applications, you will develop the application with specific versions of the packages in mind.
setup. cfg is a file which might be used to specify such options in addition to reading the command line when calling python setup.py <somecommand> . The documentation for setup.
These are called extras, here is how to use them in your setup.py.
The base support is in pkg_resources. You need to enable distribute in your setup.py. pip will also understand them:
pip install 'package[extras]' If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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