Hi !

Maybe RedBaron may help you ?

https://github.com/PyCQA/redbaron

IIRC, it aims to conserve the exact same representation of the source code, including comments and empty lines.

--lucas


On 16/12/2021 04:37, samue...@gmail.com wrote:
I wrote a little open-source tool to expose internal constructs in OpenAPI. 
Along the way, I added related functionality to:
- Generate/update a function prototype to/from a class
- JSON schema
- Automatically add type annotations to all function arguments, class 
attributes, declarations, and assignments

alongside a bunch of other features. All implemented using just the builtin 
modules (plus astor on Python < 3.9; and optionally black).

Now I'm almost at the point where I can run it—without issue—against, e.g., the 
entire TensorFlow codebase. Unfortunately this is causing huge `diff`s because 
the comments aren't preserved (and there are some whitespace issues… but I 
should be able to resolve the latter).

Is the only viable solution available to rewrite around redbaron | libcst? - I 
don't need to parse the comments just dump them out unedited whence they're 
found…

Thanks for any suggestions

PS: Library is https://github.com/SamuelMarks/cdd-python (might relicense with 
CC0… anyway too early for others to use; wait for the 0.1.0 release ;])
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