old_contents: """Creates the train class"""
  
  
  class Train:
      """
      Each train in the metro is an instance of the Train class.
      Methods:
      __init__: creates a new train in the station
      BeforeTrain: runs a Monte Carlo simulation before train arrives
      InStation: runs a Monte Carlo simluation while train is in station
      AfterTrain: runs a Monte Carlo simluation after train departure
      """
  
      def __init__(self,):
          #self.numberofcars = numberofcars
          #self.numberofpeopleincar = numberofpeopleincar
          #self.boardrate = boardrate
          #self.arrivaltime = arrivaltime
          #self.dwelltime = dwelltime
  
new_contents: """Creates the train class"""
  
  
  class Train:
      """
      Each train in the metro is an instance of the Train class.
      Methods:
      __init__: creates a new train in the station
      """
  
      def __init__(self,):
          #self.numberofcars = numberofcars
          #self.numberofpeopleincar = numberofpeopleincar
          #self.boardrate = boardrate
          #self.arrivaltime = arrivaltime
          #self.dwelltime = dwelltime
          #self.carcapacity = carcapacity
  
subject: Add properties to train class