code: def append(self, *values):
          
  
          for value in values:
              list.append(self, value)
          return self
docs: Append values at the end of the list
  
          Allow chaining.
  
          Args:
              values: values to be appened at the end.
  
          Example:
  
              >>> from ww import l
              >>> lst = l([])
              >>> lst.append(1)
              [1]
              >>> lst
              [1]
              >>> lst.append(2, 3).append(4,5)
              [1, 2, 3, 4, 5]
              >>> lst
              [1, 2, 3, 4, 5]