python24.zip

[Dieter Maurer]

Scott David Daniels <Scott.Daniels at Acm.Org> writes on Wed, 25 May 2005 07:10:00 -0700:
> ...
> I'll bet this means that the 'zope.zip', 'python24.zip' would drop
> you to "about 12500 - 10000 = 2500" failing opens.  That should be
> an easy test: sys.path.insert(0, 'zope.zip') or whatever.
> If that works and you want to drop even more, make a copy of zope.zip,
> update it with python24.zip, and call the result python24.zip.

We can not significantly reduce the amount of opens further:

  Each module import from a zip archive opens the archive.
  As we have about 2.500 modules, we will get this order of opens
  (as long as we use Python's "zipimporter").

The "zipimporter" uses a sequence of "stat"s to determine
whether it can handle a path item: it drops the last
component until it gets an existing file object and then
checks that it is indeed a zip archive.
Adding a cache for this check could save an additional few
hundreds of opens.


Dieter