Method writeout_cache

IPython/core/history.py:1067–1100

Write any entries in the cache to the database.

(self, conn: Optional[sqlite3.Connection] = None)

    @only_when_enabled
    def writeout_cache(self, conn: Optional[sqlite3.Connection] = None) -> None:
        """Write any entries in the cache to the database."""
        if conn is None:
            conn = self.db

        with self.db_input_cache_lock:
            try:
                self._writeout_input_cache(conn)
            except sqlite3.IntegrityError:
                self.new_session(conn)
                print(
                    "ERROR! Session/line number was not unique in",
                    "database. History logging moved to new session",
                    self.session_number,
                )
                try:
                    # Try writing to the new session. If this fails, don't
                    # recurse
                    self._writeout_input_cache(conn)
                except sqlite3.IntegrityError:
                    pass
            finally:
                self.db_input_cache = []

        with self.db_output_cache_lock:
            try:
                self._writeout_output_cache(conn)
            except sqlite3.IntegrityError:
                print(
                    "!! Session/line number for output was not unique",
                    "in database. Output will not be stored.",
                )
            finally:
                self.db_output_cache = []


if hasattr(os, "register_at_fork"):