code: def strip(self, col: str):
          
          def remove_ws(row):
              val = str(row[col])
              if " " in val.startswith(" "):
                  row[col] = val.strip()
              return row
  
          try:
              self.df.apply(remove_ws)
          except Exception as e:
              self.err(e, "Can not remove white space in column")
              return
          self.ok("White space removed in column values")
docs: Remove leading and trailing white spaces in a column's values
  
          :param col: name of the column
          :type col: str
  
          :example: ``ds.strip("mycol")``