code: def _update_ctx(self, attrs):
          
          for row_label, v in attrs.iterrows():
              for col_label, col in v.iteritems():
                  i = self.index.get_indexer([row_label])[0]
                  j = self.columns.get_indexer([col_label])[0]
                  for pair in col.rstrip(";").split(";"):
                      self.ctx[(i, j)].append(pair)
docs: Update the state of the Styler.
  
          Collects a mapping of {index_label: ['<property>: <value>']}.
  
          attrs : Series or DataFrame
          should contain strings of '<property>: <value>;<prop2>: <val2>'
          Whitespace shouldn't matter and the final trailing ';' shouldn't
          matter.