[Python] Dealing with multiple Python versions and PIP

Is there a way to make pip play well with multiple versions of Python? For example, I want to use pip to explicitly install things to either my site 2.5 installation or my site 2.6 installation.

For example, with easy_install, I use easy_install-2.{5,6}.

And, yes — I know about virtualenv, and no — it's not a solution to this particular problem.

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