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Sun May 1 17:44:10 CEST 2011 · https://mail.python.org/pipermail/python-dev/2011-May/111154.html

2011/5/1 anatoly techtonik <techtonik at gmail.com>:
> Is there any high-level overview of 2to3 tool that people can use as a
> quick start for writing their own fixers?

No.

>
> Source doesn't explain much (to me at least), and some kind of "learn
> by example" would really help a lot. In particular, I find the syntax of
> tree matchers the most unclear part.

I think you can learn a lot by reading through the current fixers in
lib2to3/fixers/.

-- 
Regards,
Benjamin

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[Python-Dev] 2to3 status, repositories and HACKING guide