[issue14043] Speed-up importlib's _FileFinder

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

Note that the cost of filling the cache itself isn't trivial:

$ ./python -m timeit -s "import sys; from importlib import _bootstrap" "_bootstrap._file_path_hook('Lib')._fill_cache()"
1000 loops, best of 3: 1.88 msec per loop

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14043>
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