old_contents: from medea.util import visit
  from medea.https import createContentByteGeneratorFactory
  from medea.twitter import twitterHeaders, createTwitterTimelineUrl
  
  
  def visitor(*a):
      print(a)
  
  
  def run():
      twitterUrl = createTwitterTimelineUrl('realDonaldTrump', count=1)
      byteGeneratorFactory = createContentByteGeneratorFactory(twitterUrl, twitterHeaders)
      visit(byteGeneratorFactory, visitor)
  
  
  run()
new_contents: from medea.util import visit
  from medea.https import createContentByteGeneratorFactory
  from medea.twitter import twitterHeaders, createTwitterTimelineUrl
  
  
  def visitor(tok, val):
      print(tok, val)
  
  
  def run():
      twitterUrl = createTwitterTimelineUrl('realDonaldTrump', count=1)
      byteGeneratorFactory = createContentByteGeneratorFactory(twitterUrl, twitterHeaders)
      visit(byteGeneratorFactory, visitor)
  
  
  run()
subject: Make arguments explicit