Create .pyi file automatically from cython source?

Question

How can I create .pyi files from cython source code (.pyx)?

Polygraph

I think there's been a few (1 2 3) people asking for this over the last few years, but nobody's actually done it yet... It's possible that someone may have a better answer, but I think the current status is "no, but it would probably be possible to integrate this with Cython if someone wants to write the code" – Unequaled

This project does it: pypi.org/project/cythonbuilder – Gasholder

@IyadAhmed I think cythonbuilder generates HTML files, doesn't it? – Whipperin

I tried it and it generated .pyi files ^^, maybe it had an option for HTML but didn't @Whipperin encounter it ^^ – Gasholder

@IyadAhmed you are right. cybuilder build command generates pyi by default. Maybe you can write an answer to this unanswered question?:) – Whipperin

Ok will try to do – Gasholder

There are some more tools listed here: groups.google.com/g/cython-users/c/Dmlew1oNLyw – Alum

Answer 1

You can use the cythonbuilder package for that, https://pypi.org/project/cythonbuilder/

1. Install cythonbuilder: pip install cythonbuilder
2. Use the command cythonbuilder.exe build -y to automatically build all .pyx file in current working directory and generate .pyi files.

Gasholder

CythonBuilder did not fit naturally into my setup.py files. It needed some modification to support some cython types. All the parsing code is located in: github.com/mikehuls/cythonbuilder/blob/main/cythonbuilder/… It does not support all cython syntax but it was workable with a few updates. Eventually, I created my own parser with pyparsing. It is a bit overkill for creating stub files but allows for modifications. It supported most of cython stub related syntax. github.com/RaubCamaioni/CythonPEG/blob/main/cython_peg.py – Nicotiana

Amazing work! ~~filler text to post comment~~ – Gasholder