[issue21378] ImportError: No module named 'concurrent.futures'

[Bill Bergmann]

New submission from Bill Bergmann:

python 3.4 attempting to run example at 
https://docs.python.org/3/library/concurrent.futures.html
17.4.2.1

$ python3 17_4_2.py 
Traceback (most recent call last):
  File "", line 2195, in _find_and_load_unlocked
AttributeError: 'module' object has no attribute '__path__'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "17_4_2.py", line 1, in 
import concurrent.futures
ImportError: No module named 'concurrent.futures'; 'concurrent' is not a package

os: OS X 10.6

from $env:
PATH=/Library/Frameworks/Python.framework/Versions/3.4/bin:/Library/Frameworks/Python.framework/Versions/2.7/bin:
 ...

PYTHONPATH=/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/:/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/:
 ...

--
components: Library (Lib)
messages: 217418
nosy: Bill.Bergmann
priority: normal
severity: normal
status: open
title: ImportError: No module named 'concurrent.futures'
type: crash
versions: Python 3.4

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[issue21378] ImportError: No module named 'concurrent.futures'

[Bill Bergmann]

Bill Bergmann added the comment:

Thank you for your response. The program works as expected.

I removed PYTHONPATH settings for 3.4 and 2.7. I'm not sure how those settings 
were written. I suspect something related to virtualenv, and I will be watching 
to see if they are written again.

When I removed those paths, an error message pointed me to a local version of 
concurrent.py from tornado that was shadowing the concurrent.py in the 
python3.4 site-packages.

--
resolution:  -> not a bug
status: open -> closed

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