[Python-Dev] PEP 3147, __pycache__ directories and umask

[Barry Warsaw]

On Mar 22, 2010, at 08:33 PM, Antoine Pitrou wrote:

>Well, precisely. That's why I suggest that creating the __pycache__
>directories be done *at install time* (or packaging time), and not via the
>core import machinery (that is, not at import time). That is, when you *know*
>you are the right user, with the right umask.

I don't think they're mutually exclusive.  We will definitely give users the
tool to do compilation at install time via compileall.  That needn't preclude
on-demand creation, which will generally Just Work.

-Barry
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