Making a PyPI-friendly README¶
README files can help your users understand your project and can be used to set your project’s description on PyPI. This guide helps you create a README in a PyPI-friendly format and include your README in your package so it appears on PyPI.
Creating a README file¶
README files for Python projects are often named
For your README to display properly on PyPI, choose a markup language supported by PyPI. Formats supported by PyPI’s README renderer are:
reStructuredText (without Sphinx extensions)
It’s customary to save your README file in the root of your project, in the same directory as your
Including your README in your package’s metadata¶
To include your README’s contents as your package description,
set your project’s
typically in your project’s
For example, to set these values in a package’s
Set the value of
long_description to the contents (not the path) of the README file itself.
long_description_content_type to an accepted
Content-Type-style value for your README file’s markup,
text/x-rst (for reStructuredText), or
If you’re using GitHub-flavored Markdown to write a project’s description, ensure you upgrade the following tools:
python3 -m pip install --user --upgrade setuptools wheel twine
py -m pip install --user --upgrade setuptools wheel twine
The minimum required versions of the respective tools are:
setuptools >= 38.6.0
wheel >= 0.31.0
twine >= 1.11.0
It’s recommended that you use
twine to upload the project’s distribution packages:
twine upload dist/*
For example, see this
which reads the contents of
and identifies the markup as GitHub-flavored Markdown:
from setuptools import setup # read the contents of your README file from os import path this_directory = path.abspath(path.dirname(__file__)) with open(path.join(this_directory, 'README.md'), encoding='utf-8') as f: long_description = f.read() setup( name='an_example_package', # other arguments omitted long_description=long_description, long_description_content_type='text/markdown' )
Validating reStructuredText markup¶
If your README is written in reStructuredText, any invalid markup will prevent it from rendering, causing PyPI to instead just show the README’s raw source.
Note that Sphinx extensions used in docstrings, such as
directives and roles
:py:func:`getattr`” or “
:ref:`my-reference-label`”), are not allowed here and will result in error
messages like “
Error: Unknown interpreted text role "py:func".”.
You can check your README for markup errors before uploading as follows:
Install the latest version of twine; version 1.12.0 or higher is required:
python3 -m pip install --upgrade twine
py -m pip install --upgrade twine
Build the sdist and wheel for your project as described under Packaging your project.
twine checkon the sdist and wheel:
twine check dist/*
This command will report any problems rendering your README. If your markup renders fine, the command will output
Checking distribution FILENAME: Passed.