code: def coldesc(self, columnname, actual=True):
          
          import casacore.tables.tableutil as pt
          return pt.makecoldesc(columnname, self.getcoldesc(columnname, actual))
docs: Make the description of a column.
  
          Make the description object of the given column as
          :func:`makecoldesc` is doing with the description given by
          :func:`getcoldesc`.