[Python-Dev] IO implementation: in C and Python? (original) (raw)

Guido van Rossum guido at python.org
Fri Feb 20 16:42:17 CET 2009

On Fri, Feb 20, 2009 at 4:01 AM, Antoine Pitrou <solipsis at pitrou.net> wrote:

Georg Brandl <g.brandl gmx.net> writes:

I just hope everyone updates both versions when making changes to IO. My proposal is just organizational, it is neutral in terms of whether or not the Python version is correctly maintained.

I worry that with your proposal people are once again going to import the pure Python version where they shouldn't. Maybe _pyio.py would work though?

We can hope that the IO lib semantics won't change too much in the future (although there is an IMO legitimate request for a setblocking() method: http://bugs.python.org/issue949667). On the other hand, I don't expect anyone to willingly use the Python version if the C version is available.

Hoping that modules won't evolve is futile. The concern for divergence is real. Unit-testing both with the same tests might be the solution.

-- --Guido van Rossum (home page: http://www.python.org/~guido/)

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