code: def look(self, i=0):
          
  
          try:
              self.value = self.list[self.marker + i]
          except IndexError:
              return self.default
  
          return self.value
docs: Look ahead of the iterable by some number of values with advancing
          past them.
  
          If the requested look ahead is past the end of the iterable then None is
          returned.