looping wrote: > Results on Windows XP after some run to fill the disk cache (with > ~59000 files and ~3500 folders): > Python 2.4.3 : 45s > Python 2.5 : 10s > > Very nice, but somewhat strange... > Is Python 2.4.3 os.walk buggy ???
No. A few "os" function are now implemented in terms of Windows API:s, instead of using Microsoft C's POSIX compatibility layer. This includes os.stat(), which is what isdir() uses to check if something is a directory. The code was rewritten to work around problems with timestamps, so the speedup is purely a side effect. > Is this results only valid in Windows or *nix system show the same > difference ? On Unix system, Python uses POSIX API:s, not Windows API:s. > The profiler show that most of time is spend in ntpath.isdir and this > function is *a lot* faster in Python 2.5. Why are you asking if something's buggy when you've already figured out what's been improved? > Maybe this improvement could be backported in Python 2.4 branch for the > next release ? It's not really broken, so that's not very likely. </F> -- http://mail.python.org/mailman/listinfo/python-list
