text: """Common functions."""
  
  try:
      from urllib.parse import SplitResult, urlencode, urlunsplit
  except ImportError:
      from urllib import urlencode
      from urlparse import SplitResult, urlunsplit
  
  PROPANE_API_PROTOCOL = "https"
  PROPANE_API_LOCATION = "data.tankutility.com"
  """The base location of the propane API."""
  
  
  def get_api_url(token="", path=""):
      """Get an API URL for the given path.
  
      :param str token: (optional) API token
      :param str path: (optional) API path
      :rtype: :py:class:`str`
      :returns: An API URL
  
      """
      query = urlencode({"token": token}) if token else ""
      api_path = "/".join(["api", path]).strip("/")
      split = SplitResult(
          scheme=PROPANE_API_PROTOCOL, netloc=PROPANE_API_LOCATION, path=api_path, query=query, fragment=""
      )
      return urlunsplit(split)
  