waling a directory with very many files

Tim Golden mail at timgolden.me.uk
Sun Jun 14 19:35:23 CEST 2009


tom wrote:
> i can traverse a directory using os.listdir() or os.walk(). but if a
> directory has a very large number of files, these methods produce very
> large objects talking a lot of memory.
> 
> in other languages one can avoid generating such an object by walking
> a directory as a liked list. for example, in c, perl or php one can
> use opendir() and then repeatedly readdir() until getting to the end
> of the file list. it seems this could be more efficient in some
> applications.
> 
> is there a way to do this in python? i'm relatively new to the
> language. i looked through the documentation and tried googling but
> came up empty.

If you're on Windows, you can use the win32file.FindFilesIterator
function from the pywin32 package. (Which wraps the Win32 API
FindFirstFile / FindNextFile pattern).

TJG



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