docs: def _GetShowID(self, showName):
      """
      Get epguides show id for a given show name.
  
      Attempts to match the given show name against a show title in
      self._showTitleList and, if found, returns the corresponding index
      in self._showIDList.
  
      Parameters
      ----------
        showName : string
          Show name to get show ID for.
  
      Returns
      ----------
        int or None
          If a show id is found this will be returned, otherwise None is returned.
      """
      self._GetTitleList()
      self._GetIDList()
  
      for index, showTitle in enumerate(self._showTitleList):
        if showName == showTitle:
          return self._showIDList[index]
      return None