[issue14846] Change in error when sys.path contains a nonexistent folder (importlib)

[Eric Snow]

Eric Snow <ericsnowcurrently at gmail.com> added the comment:

The caching mechanism is going to check for changes in the directory.  So the recommendation is to clear the cache manually:

<quote>
  The default finders used by import now utilize a cache of what is contained
  within a specific directory. If you create a Python source file or sourceless
  bytecode file, make sure to call importlib.invalidate_caches() to clear out
  the cache for the finders to notice the new file.
</quote>

(see http://docs.python.org/dev/whatsnew/3.3.html#porting-python-code)

That section doesn't really talk about the directory side of things, but calling importlib.invalidate_caches() works great to eliminate the error in your example.

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nosy: +brett.cannon, eric.snow, pitrou

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