code: def sort(self, col: str):
          
          try:
              self.df = self.df.copy().sort_values(col)
          except Exception as e:
              self.err(e, "Can not sort the dataframe from column " +
                       str(col))
docs: Sorts the main dataframe according to the given column
  
          :param col: column name
          :type col: str
  
          :example: ``ds.sort("Col 1")``