[Python-Dev] PEP about sys.implementation and implementation specific user site directory (original) (raw)

Benjamin Peterson benjamin at python.org
Sat Oct 10 02:29:48 CEST 2009

2009/10/9 Christian Heimes <lists at cheimes.de>:

Benjamin Peterson wrote:

sys.userdirsuffix -----------------

Why not site.userdirsuffix? Because all implementations of Python like to use the same, unpatched site module. The sys module is different for every implementation. It's more convenient to have an attribute on the sys module that can be filled by each implementation. I could also add a lookup table for all known implementations to the site module. But what about unknown or new implementations? They would have to wait until we add a new entry for them. The sys.userdirsuffix is more flexible and future prove.

I think we should make a semi-private (public to the stdlib) module like _sys or _implementation part of the Python VM API. Then, instead of stuffing everything into sys, we can provide this information in modules where it belongs.

-- Regards, Benjamin

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