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This bug was fixed in the package python2.7 - 2.7.9-2ubuntu3

---------------
python2.7 (2.7.9-2ubuntu3) vivid; urgency=medium

  * Update to 20150401, taken from the 2.7 release branch.
    - Issue #23629: Fix the default __sizeof__ implementation for
      variable-sized objects.
    - Issue #21526: Tkinter now supports new boolean type in Tcl 8.5.
    - Issue #23838: linecache now clears the cache and returns an empty
      result on MemoryError.
    - Issue #23742: ntpath.expandvars() no longer loses unbalanced single
      quotes.
    - Issue #21802: The reader in BufferedRWPair now is closed even when
      closing writer failed in BufferedRWPair.close().
    - Issue #23671: string.Template now allows to specify the "self" parameter
      as keyword argument.  string.Formatter now allows to specify the "self"
      and the "format_string" parameters as keyword arguments.
    - Issue #21560: An attempt to write a data of wrong type no longer cause
      GzipFile corruption.
    - Issue #23647: Increase imaplib's MAXLINE to accommodate modern mailbox
      sizes.
    - Issue #23539: If body is None, http.client.HTTPConnection.request now
      sets Content-Length to 0 for PUT, POST, and PATCH headers to avoid
      411 errors from some web servers.
    - Issue #23136: _strptime now uniformly handles all days in week 0,
      including Dec 30 of previous year.
    - Issue #23138: Fixed parsing cookies with absent keys or values in
      cookiejar.
    - Issue #23051: multiprocessing.Pool methods imap() and imap_unordered()
      now handle exceptions raised by an iterator.
    - Issue #22928: Disabled HTTP header injections in httplib.
    - Issue #23615: Module tarfile now can be reloaded with imp.reload().
    - Issue #23799: Added test.test_support.start_threads() for running and
      cleaning up multiple threads.
    - Issue #22390: test.regrtest now emits a warning if temporary files or
      directories are left after running a test.
    - Issue #23583: Added tests for standard IO streams in IDLE.
    - Issue #23583: Fixed writing unicode to standard output stream in IDLE.
  * Re-apply the fix for issue #22079. This is now a warning instead of an
    error. LP: #1426294.
  * Fix issue #23842, SystemError in os.minor, os.major. LP: #1435242.
 -- Matthias Klose <doko@xxxxxxxxxx>   Thu, 02 Apr 2015 16:13:26 +0200

** Changed in: python2.7 (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1435242

Title:
  Problematic type casting between int/long?

Status in Python:
  New
Status in cinder package in Ubuntu:
  Fix Released
Status in python2.7 package in Ubuntu:
  Fix Released

Bug description:
  We're seeing this error with the new kilo-3 milestone:

  ======================================================================
  FAIL: cinder.tests.test_utils.GetBlkdevMajorMinorTestCase.test_get_blkdev_major_minor_file
  cinder.tests.test_utils.GetBlkdevMajorMinorTestCase.test_get_blkdev_major_minor_file
  ----------------------------------------------------------------------
  _StringException: Traceback (most recent call last):
    File "/build/buildd/cinder-2015.1~b3/cinder/tests/test_utils.py", line 721, in test_get_blkdev_major_minor_file
      dev = self._test_get_blkdev_major_minor_file('/dev/made_up_disk1')
    File "/usr/lib/python2.7/dist-packages/mock.py", line 1210, in patched
      return func(*args, **keywargs)
    File "/build/buildd/cinder-2015.1~b3/cinder/tests/test_utils.py", line 712, in _test_get_blkdev_major_minor_file
      dev = utils.get_blkdev_major_minor(test_file)
    File "/build/buildd/cinder-2015.1~b3/cinder/utils.py", line 656, in get_blkdev_major_minor
      return get_blkdev_major_minor(devpath, False)
    File "/build/buildd/cinder-2015.1~b3/cinder/utils.py", line 645, in get_blkdev_major_minor
      return '%d:%d' % (os.major(st.st_rdev), os.minor(st.st_rdev))
  SystemError: ../Objects/longobject.c:998: bad argument to internal function
  Traceback (most recent call last):
  _StringException: Empty attachments:
    stderr
    stdout

  Traceback (most recent call last):
    File "/build/buildd/cinder-2015.1~b3/cinder/tests/test_utils.py", line 721, in test_get_blkdev_major_minor_file
      dev = self._test_get_blkdev_major_minor_file('/dev/made_up_disk1')
    File "/usr/lib/python2.7/dist-packages/mock.py", line 1210, in patched
      return func(*args, **keywargs)
    File "/build/buildd/cinder-2015.1~b3/cinder/tests/test_utils.py", line 712, in _test_get_blkdev_major_minor_file
      dev = utils.get_blkdev_major_minor(test_file)
    File "/build/buildd/cinder-2015.1~b3/cinder/utils.py", line 656, in get_blkdev_major_minor
      return get_blkdev_major_minor(devpath, False)
    File "/build/buildd/cinder-2015.1~b3/cinder/utils.py", line 645, in get_blkdev_major_minor
      return '%d:%d' % (os.major(st.st_rdev), os.minor(st.st_rdev))
  SystemError: ../Objects/longobject.c:998: bad argument to internal function

  Traceback (most recent call last):
  _StringException: Empty attachments:
    stderr
    stdout

  Traceback (most recent call last):
    File "/build/buildd/cinder-2015.1~b3/cinder/tests/test_utils.py", line 721, in test_get_blkdev_major_minor_file
      dev = self._test_get_blkdev_major_minor_file('/dev/made_up_disk1')
    File "/usr/lib/python2.7/dist-packages/mock.py", line 1210, in patched
      return func(*args, **keywargs)
    File "/build/buildd/cinder-2015.1~b3/cinder/tests/test_utils.py", line 712, in _test_get_blkdev_major_minor_file
      dev = utils.get_blkdev_major_minor(test_file)
    File "/build/buildd/cinder-2015.1~b3/cinder/utils.py", line 656, in get_blkdev_major_minor
      return get_blkdev_major_minor(devpath, False)
    File "/build/buildd/cinder-2015.1~b3/cinder/utils.py", line 645, in get_blkdev_major_minor
      return '%d:%d' % (os.major(st.st_rdev), os.minor(st.st_rdev))
  SystemError: ../Objects/longobject.c:998: bad argument to internal function

  This is evidently not impacting cinder on 14.04, just 15.04 so I would
  suspect some sort of python 2.7.9 issue.

  Casting to long appears to workaround this problem.

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