> On 16 Dec 2021, at 03:49, samue...@gmail.com <samuelma...@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

Have a look at the code that is used by https://github.com/asottile/pyupgrade
There are a couple of libraries that it uses that does what I think you want to 
do.

Barry

> 
> 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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