code: def items(self):
          '''Return a list of tuples of all the keys and tasks'''
          pairs = []
          for key, value in self.map.items():
              if isinstance(value, Shovel):
                  pairs.extend([(key + '.' + k, v) for k, v in value.items()])
              else:
                  pairs.append((key, value))
          return sorted(pairsf items(self):
          '''Return a list of tuples of all the keys and tasks'''
          pairs = []
          for key, value in self.map.items():
              if isinstance(value, Shovel):
                  pairs.extend([(key + '.' + k, v) for k, v in value.items()])
              else:
                  pairs.append((key, value))
          return sorted(pairs)
docs: Return a list of tuples of all the keys and tasks