docs: def processString(inptStr):
      ''' 
      inptStr may be a string of the following forms:
      * 'meme: text0 | text1'
      * 'gif: search_keywords'
  
      If not, it returns an appropriate error message,
      stating an improperly formatted <magic> tag.
      
      Fails gracefully when it can't find or generate a meme
      or a gif, by returning an appropriate image url with the
      failure message on it.
  
      TODO: Find a way to efficiently search for xkcd comics
      '''
  
      inptStr.strip(' ')
      imgParamList = inptStr.split(':')
  
      if len(imgParamList) < 2:
          print("Not enough information for searching for image.")
          return not_enough_info
  
      else:
  
          imgType = imgParamList[0]
          imgParams = imgParamList[1]
          
          if imgType == 'meme':
              imgURL = processMeme(imgParams)
              # print(imgURL)
              return imgURL
  
          elif imgType == 'gif':
              gifURL = processGif(imgParams)
              # print(gifURL)
              return gifURL
  
          else:
              print("Improperly formatted <magic> tag.")
              return improperly_formatted_tag