It's easiest to use this tool using uv.
Either install the tool using uv tool install git+https://github.com/astral-sh/docstring-adder
and then invoke it using the add-docstrings command, or invoke it directly using
uvx --from=git+https://github.com/astral-sh/docstring-adder add-docstrings.
Consult the module-level docstring in add_docstrings.py for more details on how the tool works.
Run uvx --from=git+https://github.com/astral-sh/docstring-adder add-docstrings --help for
information on the various CLI options the tool supports.