[Bug 1063350] Re: add-apt-repository and apt-add-repository fails

[Nathan Stratton Treadway]

Actually, it looks like the problem is in pycurl, since calling .close()
seems to cause the very next floating point operation to return NaN.
(In the case of add-apt-repository, that floating point operation just
happens to be in the random() call invoked from inside the
tempfile.mkdtemp() function.)

==========================
~$ python
Python 2.7.3 (default, Aug  1 2012, 05:16:07) 
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pycurl, tempfile
>>> def geturl(url):
...   curl=pycurl.Curl()
...   curl.setopt(pycurl.URL,url)
...   curl.perform()
...   print
...   print "before:", 1.0/2, 1.0/2
...   curl.close()
...   print "after:", 1.0/2, 1.0/2
...   print tempfile.mkdtemp()
... 
>>> 
>>> geturl("https://launchpad.net/api/")
Object: <lp.services.webapp.servers.WebServiceClientRequest instance URL=https://launchpad.net>, name: ''
before: 0.5 0.5
after: nan 0.5
/tmp/tmplHPMk4
==========================

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https://bugs.launchpad.net/bugs/1063350

Title:
  add-apt-repository and apt-add-repository fails

Status in “software-properties” package in Ubuntu:
  Confirmed

Bug description:
  # add-apt-repository ppa:ubuntu-wine/ppa
  You are about to add the following PPA to your system:
   Welcome to the Wine Team PPA.  Here you can get the latest available Wine betas for every supported version of Ubuntu.  This PPA is managed by Scott Ritchie and Maarten Lankhorst.
   More info: https://launchpad.net/~ubuntu-wine/+archive/ppa
  Press [ENTER] to continue or ctrl-c to cancel adding it

  Exception in thread Thread-1:
  Traceback (most recent call last):
    File "/usr/lib/python2.7/threading.py", line 551, in __bootstrap_inner
      self.run()
    File "/usr/lib/python2.7/dist-packages/softwareproperties/ppa.py", line 99, in run
      self.add_ppa_signing_key(self.ppa_path)
    File "/usr/lib/python2.7/dist-packages/softwareproperties/ppa.py", line 132, in add_ppa_signing_key
      tmp_keyring_dir = tempfile.mkdtemp()
    File "/usr/lib/python2.7/tempfile.py", line 322, in mkdtemp
      name = names.next()
    File "/usr/lib/python2.7/tempfile.py", line 141, in next
      letters = [choose(c) for dummy in "123456"]
    File "/usr/lib/python2.7/random.py", line 274, in choice
      return seq[int(self.random() * len(seq))]  # raises IndexError if seq is empty
  ValueError: cannot convert float NaN to integer

  I have tried a purge and install but it doesn't fix this.

  No idea how to work around this.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: python-software-properties 0.82.7.3
  ProcVersionSignature: Ubuntu 3.2.0-31.50-generic-pae 3.2.28
  Uname: Linux 3.2.0-31-generic-pae i686
  ApportVersion: 2.0.1-0ubuntu13
  Architecture: i386
  Date: Sun Oct  7 18:43:46 2012
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: software-properties
  UpgradeStatus: Upgraded to precise on 2012-10-03 (4 days ago)

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