code: def get(self, key, default=None):
          
          try:
              return self.items[key]
          except IndexError:
              return value(default)
docs: Get an element of the collection.
  
          :param key: The index of the element
          :type key: mixed
  
          :param default: The default value to return
          :type default: mixed
  
          :rtype: mixed