当我从并发导入时，它给了我ImportError.futures import ThreadPoolExecutor`。 有人知道为什么吗？

Question

I get ImportError when I try to import:

from concurrent.futures import ThreadPoolExecutor

ERROR:

Traceback (most recent call last):
  File "queue.py", line 4, in <module>
    from concurrent.futures import ThreadPoolExecutor
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/concurrent/futures/__init__.py", line 48, in __getattr__
    from .thread import ThreadPoolExecutor as te
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/concurrent/futures/thread.py", line 11, in <module>
    import queue
  File "/Users/tigranfahradyan/Desktop/python3/learning/queue.py", line 4, in <module>
    from concurrent.futures import ThreadPoolExecutor
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/concurrent/futures/__init__.py", line 48, in __getattr__
    from .thread import ThreadPoolExecutor as te
ImportError: cannot import name 'ThreadPoolExecutor' from 'concurrent.futures.thread' (/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/concurrent/futures/thread.py)

It seems that something is wrong with queue module. Can anyone help to figure this out?

Answer 1

You've got a case of dependency confusion there. Check the stack-trace. See that line where it's trying to import queue and that resolves to /Users/.../queue.py . I'm guessing that's some file you wrote. The python import mechanism is confused between that queue.py and the queue.py of concurrent.futures .

Try renaming your queue.py file to something else.

Answer 2

Can you share your Queue file. It should work if we import from concurrent.futures import ThreadPoolExecutor in python 3.2 or later version. It would be very happy to look into it if you could share snippet of queue.py file to investigate more. Try changing queue.py name and run, if not works, share your snippet, i will look into into for you.