old_contents: #
  # markdown/__version__.py
  #
  # version_info should conform to PEP 386 
  # (major, minor, micro, alpha/beta/rc/final, #)
  # (1, 1, 2, 'alpha', 0) => "1.1.2.dev"
  # (1, 2, 0, 'beta', 2) => "1.2b2"
  version_info = (2, 4, 1, 'zds', 9)
  
  def _get_version():
      " Returns a PEP 386-compliant version number from version_info. "
      assert len(version_info) == 5
      assert version_info[3] in ('alpha', 'beta', 'rc', 'final','zds')
  
      parts = 2 if version_info[2] == 0 else 3
      main = '.'.join(map(str, version_info[:parts]))
  
      sub = ''
      if version_info[3] == 'alpha' and version_info[4] == 0:
          # TODO: maybe append some sort of git info here??
          sub = '.dev'
      elif version_info[3] != 'final':
          mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'c', 'zds':'post'}
          sub = mapping[version_info[3]] + str(version_info[4])
  
      return str(main + sub)
  
  version = _get_version()
  
new_contents: #
  # markdown/__version__.py
  #
  # version_info should conform to PEP 386 
  # (major, minor, micro, alpha/beta/rc/final, #)
  # (1, 1, 2, 'alpha', 0) => "1.1.2.dev"
  # (1, 2, 0, 'beta', 2) => "1.2b2"
  version_info = (2, 4, 1, 'zds', 10)
  
  def _get_version():
      " Returns a PEP 386-compliant version number from version_info. "
      assert len(version_info) == 5
      assert version_info[3] in ('alpha', 'beta', 'rc', 'final','zds')
  
      parts = 2 if version_info[2] == 0 else 3
      main = '.'.join(map(str, version_info[:parts]))
  
      sub = ''
      if version_info[3] == 'alpha' and version_info[4] == 0:
          # TODO: maybe append some sort of git info here??
          sub = '.dev'
      elif version_info[3] != 'final':
          mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'c', 'zds':'post'}
          sub = mapping[version_info[3]] + str(version_info[4])
  
      return str(main + sub)
  
  version = _get_version()
  
subject: Update version