old_contents: # -*- coding: utf-8 -*-
  # Author: Douglas Creager <dcreager@dcreager.net>
  # This file is placed into the public domain.
  
  # Calculates the current version number.  If possible, this is the
  # output of “git describe”, modified to conform to the versioning
  # scheme that setuptools uses.  If “git describe” returns an error
  # (most likely because we're in an unpacked copy of a release tarball,
  # rather than in a git working copy), then we fall back on reading the
  # contents of the RELEASE-VERSION file.
  #
  # To use this script, simply import it your setup.py file, and use the
  # results of get_git_version() as your package version:
  #
  # from version import *
  #
  # setup(
  #     version=get_git_version(),
  #     .
  #     .
  #     .
  # )
  #
  # This will automatically update the RELEASE-VERSION file, if
  # necessary.  Note that the RELEASE-VERSION file should *not* be
  # checked into git; please add it to your top-level .gitignore file.
  #
  # You'll probably want to distribute the RELEASE-VERSION file in your
  # sdist tarballs; to do this, just create a MANIFEST.in file that
  # contains the following line:
  #
  #   include RELEASE-VERSION
  
  __all__ = ("get_git_version")
  
  from subprocess import Popen, PIPE
  
  
  def call_git_describe(abbrev=4):
      try:
          p = Popen(['git', 'describe', '--abbrev=%d' % abbrev],
                    stdout=PIPE, stderr=PIPE)
          p.stderr.close()
          line = p.stdout.readlines()[0]
          return line.strip()
  
      except:
          return None
  
  
  def read_release_version():
      try:
          f = open("RELEASE-VERSION", "r")
  
          try:
              version = f.readlines()[0]
              return version.strip()
  
          finally:
              f.close()
  
      except:
          return None
  
  
  def write_release_version(version):
      f = open("RELEASE-VERSION", "w")
      f.write("%s\n" % version)
      f.close()
  
  
  def get_git_version(abbrev=4):
      # Read in the version that's currently in RELEASE-VERSION.
  
      release_version = read_release_version()
  
      # First try to get the current version using “git describe”.
  
      version = call_git_describe(abbrev)
  
      # If that doesn't work, fall back on the value that's in
      # RELEASE-VERSION.
  
      if version is None:
          version = release_version
  
      # If we still don't have anything, that's an error.
  
      if version is None:
          raise ValueError("Cannot find the version number!")
  
      # If the current version is different from what's in the
      # RELEASE-VERSION file, update the file to be current.
  
      if version != release_version:
          write_release_version(version)
  
      # Finally, return the current version.
  
      return version
  
  
  if __name__ == "__main__":
      print get_git_version()
  
new_contents: # -*- coding: utf-8 -*-
  # Author: Douglas Creager <dcreager@dcreager.net>
  # This file is placed into the public domain.
  
  # Calculates the current version number.  If possible, this is the
  # output of “git describe”, modified to conform to the versioning
  # scheme that setuptools uses.  If “git describe” returns an error
  # (most likely because we're in an unpacked copy of a release tarball,
  # rather than in a git working copy), then we fall back on reading the
  # contents of the RELEASE-VERSION file.
  #
  # To use this script, simply import it your setup.py file, and use the
  # results of get_git_version() as your package version:
  #
  # from version import *
  #
  # setup(
  #     version=get_git_version(),
  #     .
  #     .
  #     .
  # )
  #
  # This will automatically update the RELEASE-VERSION file, if
  # necessary.  Note that the RELEASE-VERSION file should *not* be
  # checked into git; please add it to your top-level .gitignore file.
  #
  # You'll probably want to distribute the RELEASE-VERSION file in your
  # sdist tarballs; to do this, just create a MANIFEST.in file that
  # contains the following line:
  #
  #   include RELEASE-VERSION
  
  __all__ = ("get_git_version")
  
  from subprocess import Popen, PIPE
  
  
  def call_git_describe(abbrev=4):
      try:
          p = Popen(['git', 'describe', '--abbrev=%d' % abbrev],
                    stdout=PIPE, stderr=PIPE)
          p.stderr.close()
          line = p.stdout.readlines()[0]
          return line.strip()
  
      except:
          return None
  
  
  def read_release_version():
      try:
          f = open("RELEASE-VERSION", "r")
  
          try:
              version = f.readlines()[0]
              return version.strip()
  
          finally:
              f.close()
  
      except:
          return None
  
  
  def write_release_version(version):
      f = open("RELEASE-VERSION", "w")
      f.write("%s\n" % version)
      f.close()
  
  
  def get_git_version(abbrev=4):
      # Read in the version that's currently in RELEASE-VERSION.
  
      release_version = read_release_version()
  
      # First try to get the current version using “git describe”.
  
      version = call_git_describe(abbrev)
  
      # If that doesn't work, fall back on the value that's in
      # RELEASE-VERSION.
  
      if version is None:
          version = release_version
  
      # If we still don't have anything, that's an error.
  
      if version is None:
          raise ValueError("Cannot find the version number!")
  
      # If the current version is different from what's in the
      # RELEASE-VERSION file, update the file to be current.
  
      if version != release_version:
          write_release_version(version)
  
      # Finally, return the current version.
  
      return version
  
  
  if __name__ == "__main__":
      print(get_git_version())
  
subject: Update version.py to work with Python 3. Fixes #3459.