Mike Brown <mike at skew.org> writes: > I thought it would be nice to try to improve the mimetypes module by having > it, on Windows, query the Registry to get the mapping of filename extensions > to media types, since the mimetypes code currently just blindly checks > posix-specific paths for httpd-style mapping files. However, it seems that the > way to get mappings from the Windows registry is excessively slow in Python. > > I'm told that the reason has to do with the limited subset of APIs that are > exposed in the _winreg module. I think it is that EnumKey(key, index) is > querying for the entire list of subkeys for the given key every time you call > it. Or something. Whatever the situation is, the code I tried below is way > slower than I think it ought to be. > > Does anyone have any suggestions (besides "write it in C")? Could _winreg > possibly be improved to provide an iterator or better interface to get the > subkeys? (or certain ones? There are a lot of keys under HKEY_CLASSES_ROOT, > and I only need the ones that start with a period). See this post I made some time ago: <http://mail.python.org/pipermail/python-dev/2004-January/042198.html> > Should I file this as a feature request? If you still think it should be changed in the core, you should work on a patch. Thomas
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