2011/11/27 Zbigniew Jędrzejewski-Szmek firstname.lastname@example.org:
I guess that it would be useful to have an option to turn off those sys.path manipulations.
Yeah, I recently proposed exactly that (a '--nopath0' option) in http://bugs.python.org/issue13475 (that issue also proposes a "-p/--path0" option to *override* the automatic initialisation of sys.path with a different value). I may still make this general question part of the proposals in PEP 395, though, since it's fairly closely related to many of the issues already discussed by that PEP and is something that will need to be thought out fairly well to make sure it achieves the objective of avoiding cross-user interference.
There are limits to what we can do by default due to backwards compatibility concerns, but it should at least be possible to provide better tools to help manage the problem.