[Bug 1284469] [NEW] Exception on installing/reconfiguring python3

[Sworddragon]

Public bug reported:

I'm using Ubuntu 14.04 dev with python3.4 3.4~rc1-1build1 and on doing a
"dpkg-reconfigure python3" I'm, getting the following output:

Exception ignored in: <bound method Popen.__del__ of <subprocess.Popen object at 0x7fab60316c88>>
Traceback (most recent call last):
  File "/usr/lib/python3.4/subprocess.py", line 897, in __del__
TypeError: 'NoneType' object is not callable
running python post-rtupdate hooks for python3.4...
Exception ignored in: <bound method Popen.__del__ of <subprocess.Popen object at 0x7f518d0d1c50>>
Traceback (most recent call last):
  File "/usr/lib/python3.4/subprocess.py", line 897, in __del__
TypeError: 'NoneType' object is not callable


As in this example the exception can appear multiple times but the most times all is working fine (I'm needing ~5 tries to see the exception).

** Affects: python3.4 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1284469

Title:
  Exception on installing/reconfiguring python3

Status in “python3.4” package in Ubuntu:
  New

Bug description:
  I'm using Ubuntu 14.04 dev with python3.4 3.4~rc1-1build1 and on doing
  a "dpkg-reconfigure python3" I'm, getting the following output:

  Exception ignored in: <bound method Popen.__del__ of <subprocess.Popen object at 0x7fab60316c88>>
  Traceback (most recent call last):
    File "/usr/lib/python3.4/subprocess.py", line 897, in __del__
  TypeError: 'NoneType' object is not callable
  running python post-rtupdate hooks for python3.4...
  Exception ignored in: <bound method Popen.__del__ of <subprocess.Popen object at 0x7f518d0d1c50>>
  Traceback (most recent call last):
    File "/usr/lib/python3.4/subprocess.py", line 897, in __del__
  TypeError: 'NoneType' object is not callable

  
  As in this example the exception can appear multiple times but the most times all is working fine (I'm needing ~5 tries to see the exception).

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