Method do

Lib/_pyrepl/historical_reader.py:66–71

(self)

class previous_history(commands.Command):
    def do(self) -> None:
        r = self.reader
        if r.historyi == 0:
            r.error("start of history list")
            return
        r.select_item(r.historyi - 1)


class history_search_backward(commands.Command):