Class PtkHistoryAdapter

IPython/terminal/interactiveshell.py:170–205

Prompt toolkit has it's own way of handling history, Where it assumes it can Push/pull from history.

class PtkHistoryAdapter(History):
    """
    Prompt toolkit has it's own way of handling history, Where it assumes it can
    Push/pull from history.

    """

    def __init__(self, shell):
        super().__init__()
        self.shell = shell
        self._refresh()

    def append_string(self, string):
        # we rely on sql for that.
        self._loaded = False
        self._refresh()

    def _refresh(self):
        if not self._loaded:
            self._loaded_strings = list(self.load_history_strings())

    def load_history_strings(self):
        last_cell = ""
        res = []
        for __, ___, cell in self.shell.history_manager.get_tail(
            self.shell.history_load_length, include_latest=True
        ):
            # Ignore blank lines and consecutive duplicates
            cell = cell.rstrip()
            if cell and (cell != last_cell):
                res.append(cell)
                last_cell = cell
        yield from res[::-1]

    def store_string(self, string: str) -> None:
        pass

class TerminalInteractiveShell(InteractiveShell):
    mime_renderers = Dict().tag(config=True)