[Python-ideas] Enabling access to the AST for Python code

[Guido van Rossum]

On Sat, Jun 13, 2015 at 1:39 AM, Mark Lawrence <breamoreboy at yahoo.co.uk>
wrote:

>
> You might find this interesting https://github.com/Psycojoker/baron
>
> The introduction states "Baron is a Full Syntax Tree (FST) library for
> Python. By opposition to an AST which drops some syntax information in the
> process of its creation (like empty lines, comments, formatting), a FST
> keeps everything and guarantees the operation
> fst_to_code(code_to_fst(source_code)) == source_code.".
>

There's one like this in the stdlib too! It's in lib2to3 and even preserves
comments and whitespace. It's used as the basis for the 2to3 fixers.

-- 
--Guido van Rossum (python.org/~guido)
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