rok commented on PR #51680:
URL: https://github.com/apache/arrow/pull/51680#issuecomment-5936263728

   It would be really great to automatically extract stubs from cython!
   
   > Whatever information the tool cannot extract from the cython information, 
we can augment with adding python type annotations.
   
   By that you mean we add more precise type information or do you mean we 
additionally annotate symbols that are dynamically created at import time (e.g. 
all kernels)?
   If we want to annotate dynamically generated symbols directly we could do 
that in a separately versioned `.pyi` files and dynamically inject them with 
docstrings at wheel build time as we do now. But then, maintenance wise, did we 
gain enough?


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