code: def dframe(self):
          
          self.param.warning("The MultiDimensionalMapping.dframe method is "
                             "deprecated and should no longer be used. "
                             "Use a more specific subclass which does support "
                             "the dframe method instead, e.g. a HoloMap.")
          try:
              import pandas
          except ImportError:
              raise Exception("Cannot build a DataFrame without the pandas library.")
          labels = self.dimensions('key', True) + [self.group]
          return pandas.DataFrame(
              [dict(zip(labels, k + (v,))) for (k, v) in self.data.items()])
docs: Deprecated method to convert a MultiDimensionalMapping to
          a pandas DataFrame. Conversion to a dataframe now only
          supported by specific subclasses such as UniformNdMapping
          types.