[Bug 1628763] Re: Example of Queue from documentation fails

Serhiy Storchaka 1628763 at bugs.launchpad.net
Tue Oct 10 11:14:35 UTC 2017


This looks like there is a queue.py file in the current directory which
hides the queue module from the stdlib. In Python 2.7 this module is
named Queue and doesn't conflict with a local file queue.py.

Can you confirm Kevin?

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Title:
  Example of Queue from documentation fails

Status in python3-defaults package in Ubuntu:
  New

Bug description:
  Reading https://docs.python.org/3.5/library/multiprocessing.html
  #exchanging-objects-between-processes, I have copy-pasted the code
  into a file.  Running it with python3 fails thus:

  Traceback (most recent call last):
    File "q.py", line 7, in <module>
      q = Queue()
    File "/usr/lib/python3.5/multiprocessing/context.py", line 100, in Queue
      from .queues import Queue
    File "/usr/lib/python3.5/multiprocessing/queues.py", line 20, in <module>
      from queue import Empty, Full
  ImportError: cannot import name 'Empty'

  
  I will attach the actual code file.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: python3 3.5.1-3
  ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
  Uname: Linux 4.4.0-34-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Wed Sep 28 20:54:17 2016
  InstallationDate: Installed on 2016-08-08 (51 days ago)
  InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  SourcePackage: python3-defaults
  UpgradeStatus: No upgrade log present (probably fresh install)

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