code: def rename(self, source_col: str, dest_col: str):
          
          try:
              self.df = self.df.rename(columns={source_col: dest_col})
          except Exception as e:
              self.err(e, self.rename, "Can not rename column")
              return
          self.ok("Column", source_col, "renamed")
docs: Renames a column in the main dataframe
  
          :param source_col: name of the column to rename
          :type source_col: str
          :param dest_col: new name of the column
          :type dest_col: str
  
          :example: ``ds.rename("Col 1", "New col")``