text: 
  def week():
      days = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]
      for day in days:
          yield day
  
  
  
  # days = week()
  # print(next(days))
  # print(next(days))
  # print(next(days))
  # print(next(days))
  # print(next(days))
  # print(next(days))
  # print(next(days))
  # print(next(days))
  
  
  def yes_or_no():
      answer = "yes"
      while True:
          yield answer
          answer = "no" if answer == "yes" else "yes"
  
  
  gen = yes_or_no()
  print(next(gen))
  print(next(gen))
  print(next(gen))
  print(next(gen))