docs: def get_version(version=None):
      """Returns a tuple of the django version. If version argument is non-empty,
      then checks for correctness of the tuple provided.
      """
  
      if version[4] > 0:  # 0.2.1-alpha.1
          return "%s.%s.%s-%s.%s" % (version[0], version[1], version[2], version[3], version[4])
      elif version[3] != '':  # 0.2.1-alpha
          return "%s.%s.%s-%s" % (version[0], version[1], version[2], version[3])
      elif version[2] > 0:  # 0.2.1
          return "%s.%s.%s" % (version[0], version[1], version[2])
      else:  # 0.2
          return "%s.%s" % (version[0], version[1])