Message 141460 - Python tracker

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In-reply-to
Author	ncoghlan
Recipients	brett.cannon, docs@python, kota, ncoghlan
Date	2011年07月31日.08:20:32
SpamBayes Score	6.1287895e-09
Marked as misclassified	No
Message-id	<1312100433.29.0.462964389752.issue12648@psf.upfronthosting.co.za>

Content
The Windows build actually uses the registry to locate the standard library rather than sys.path. This is by design, but isn't really documented properly. It means that code on sys.path (even in the current directory) won't shadow standard library modules on Windows. Due to various arcane details about how it is implemented, the emulation of the main import system that is used to run code with the '-m' switch gets the search order the other way around and hence gives a different answer (the same answer as Linux) in cases like this.

Content

The Windows build actually uses the registry to locate the standard library rather than sys.path. This is by design, but isn't really documented properly.
It means that code on sys.path (even in the current directory) won't shadow standard library modules on Windows.
Due to various arcane details about how it is implemented, the emulation of the main import system that is used to run code with the '-m' switch gets the search order the other way around and hence gives a different answer (the same answer as Linux) in cases like this.

History
Date	User	Action	Args
2011年07月31日 08:20:33	ncoghlan	set	recipients: + ncoghlan, brett.cannon, docs@python, kota
2011年07月31日 08:20:33	ncoghlan	set	messageid: <1312100433.29.0.462964389752.issue12648@psf.upfronthosting.co.za>
2011年07月31日 08:20:32	ncoghlan	link	issue12648 messages
2011年07月31日 08:20:32	ncoghlan	create

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