code: def update(self, new_vals):
          
          for k, v in six.iteritems(new_vals):
              k = k.strip()
              if k in self.row:
                  warnings.warn("Adding history key ({}) that is already set in this step".format(
                      k), wandb.WandbWarning)
              self.row[k] = v
docs: Add a dictionary of values to the current step without writing it to disk.