code: def exclude(self, col: str, val):
          
          try:
              self.df = self.df[self.df[col] != val]
          except Exception as e:
              self.err(e, "Can not exclude rows based on value " + str(val))
docs: Delete rows based on value
  
          :param col: column name
          :type col: str
          :param val: value to delete
          :type val: any
  
          :example: ``ds.exclude("Col 1", "value")``