Generating Python Stubs

Static analysis

• mypy's stubgen
  • command: stubgen fiona
  • output: https://github.com/EOX-A/Fiona/tree/types-static-mypy/out/fiona
• Microsoft's pyright
  • command: pyright --createstub fiona
  • output: https://github.com/EOX-A/Fiona/tree/types-static-pyright/typings/fiona
• Google's pytype
  • command: pytype --always-use-return-annotations --no-report-errors fiona
  • output: https://github.com/EOX-A/Fiona/tree/types-static-pytype/.pytype/pyi/fiona

Runtime analysis

• Instagram's MonkeyType: https://github.com/instagram/MonkeyType
  • command:

    pip install pytest-monkeytype
    mkdir typings && cd typings && MONKEYTYPE_TRACE_MODULES=fiona pytest --monkeytype-output=monkeytype.sqlite3 ..
    mkdir -p fiona/fio && monkeytype list-modules | xargs -I {} sh -c 'monkeytype stub "$1" > "$(echo $1 | tr '.' '/').pyi"' -- {}

  • output: https://github.com/EOX-A/Fiona/tree/types-runtime-monkeytype/fiona
• pyannotate by Guido van Rossum, latest release Sept. 2019 https://pypi.org/project/pyannotate/
  • pyannotate cannot create stubs, only inline type annotations. Therefore it is out-of-scope for now.