text: class EstacionesRadio():
      def __init__(self):
          self.estacion = [89.9,101.2,102.3,100.4]
          self.index = -1
  
      def __iter__(self):
          return self
  
      def __next__(self):
          self.index += 1
          if self.index == len(self.estacion):
              raise StopIteration
  
          return self.estacion[self.index]
  
  
  r= EstacionesRadio()
  itr=iter(r)
  print(next(itr))
  