How to use the chess.engine.EngineError function in chess

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github niklasf / python-chess / chess / engine.py View on Github external
engine._new(board, game, options)

                # Limit or time control.
                increment = limit.white_inc if board.turn else limit.black_inc
                if limit.remaining_moves or increment:
                    base_mins, base_secs = divmod(int(limit.white_clock if board.turn else limit.black_clock), 60)
                    engine.send_line("level {} {}:{:02d} {}".format(limit.remaining_moves or 0, base_mins, base_secs, increment))

                if limit.nodes is not None:
                    if limit.time is not None or limit.white_clock is not None or limit.black_clock is not None or increment is not None:
                        raise EngineError("xboard does not support mixing node limits with time limits")

                    if "nps" not in engine.features:
                        LOGGER.warning("%s: Engine did not declare explicit support for node limits (feature nps=?)")
                    elif not engine.features["nps"]:
                        raise EngineError("xboard engine does not support node limits (feature nps=0)")

                    engine.send_line("nps 1")
                    engine.send_line("st {}".format(int(limit.nodes)))
                if limit.depth is not None:
                    engine.send_line("sd {}".format(limit.depth))
                if limit.time is not None:
                    engine.send_line("st {}".format(limit.time))
                if limit.white_clock is not None:
                    engine.send_line("{} {}".format("time" if board.turn else "otim", int(limit.white_clock * 100)))
                if limit.black_clock is not None:
                    engine.send_line("{} {}".format("otim" if board.turn else "time", int(limit.black_clock * 100)))

                # Start thinking.
                engine.send_line("post" if info else "nopost")
                engine.send_line("hard" if ponder else "easy")
                engine.send_line("go")
github niklasf / python-chess / chess / engine.py View on Github external
def _line_received(self, engine: EngineProtocolT, line: str) -> None:
        assert self.state in [CommandState.Active, CommandState.Cancelling]
        try:
            self.line_received(engine, line)
        except EngineError as err:
            self._handle_exception(engine, err)
github niklasf / python-chess / chess / engine.py View on Github external
def _setoption(self, name: str, value: ConfigValue) -> None:
        if value is not None and value == self.config.get(name):
            return

        try:
            option = self.options[name]
        except KeyError:
            raise EngineError("unsupported xboard option or command: {}".format(name))

        self.config[name] = value = option.parse(value)

        if name in ["random", "computer"]:
            # Applied in _new.
            pass
        elif name in ["memory", "cores"] or name.startswith("egtpath "):
            self.send_line("{} {}".format(name, value))
        elif value is None:
            self.send_line("option {}".format(name))
        elif value is True:
            self.send_line("option {}=1".format(name))
        elif value is False:
            self.send_line("option {}=0".format(name))
        else:
            self.send_line("option {}={}".format(name, value))
github niklasf / python-chess / chess / engine.py View on Github external
def end(self, engine: XBoardProtocol) -> None:
                if not engine.features.get("ping", 0):
                    self.result.set_exception(EngineError("xboard engine did not declare required feature: ping"))
                    self.set_finished()
                    return
                if not engine.features.get("setboard", 0):
                    self.result.set_exception(EngineError("xboard engine did not declare required feature: setboard"))
                    self.set_finished()
                    return

                if not engine.features.get("reuse", 1):
                    LOGGER.warning("%s: Rejecting feature reuse=0", engine)
                    engine.send_line("reject reuse")
                if not engine.features.get("sigterm", 1):
                    LOGGER.warning("%s: Rejecting feature sigterm=0", engine)
                    engine.send_line("reject sigterm")
                if engine.features.get("usermove", 0):
                    LOGGER.warning("%s: Rejecting feature usermove=1", engine)
                    engine.send_line("reject usermove")
                if engine.features.get("san", 0):
                    LOGGER.warning("%s: Rejecting feature san=1", engine)
                    engine.send_line("reject san")
github niklasf / python-chess / chess / engine.py View on Github external
if self.type == "check":
            return value and value != "false"
        elif self.type == "spin":
            try:
                value = int(value)
            except ValueError:
                raise EngineError("expected integer for spin option {!r}, got: {!r}".format(self.name, value))
            if self.min is not None and value < self.min:
                raise EngineError("expected value for option {!r} to be at least {}, got: {}".format(self.name, self.min, value))
            if self.max is not None and self.max < value:
                raise EngineError("expected value for option {!r} to be at most {}, got: {}".format(self.name, self.max, value))
            return value
        elif self.type == "combo":
            value = str(value)
            if value not in (self.var or []):
                raise EngineError("invalid value for combo option {!r}, got: {} (available: {})".format(self.name, value, ", ".join(self.var)))
            return value
        elif self.type in ["button", "reset", "save"]:
            return None
        elif self.type in ["string", "file", "path"]:
            value = str(value)
            if "\n" in value or "\r" in value:
                raise EngineError("invalid line-break in string option {!r}: {!r}".format(self.name, value))
            return value
        else:
            raise EngineError("unknown option type: {}", self.type)
github niklasf / python-chess / chess / engine.py View on Github external
def _bestmove(self, engine: UciProtocol, arg: str) -> None:
                if not self.result.done():
                    raise EngineError("was not searching, but engine sent bestmove")
                self.set_finished()
                self.analysis.set_finished()
github niklasf / python-chess / chess / engine.py View on Github external
def end(self, engine: XBoardProtocol) -> None:
                if not engine.features.get("ping", 0):
                    self.result.set_exception(EngineError("xboard engine did not declare required feature: ping"))
                    self.set_finished()
                    return
                if not engine.features.get("setboard", 0):
                    self.result.set_exception(EngineError("xboard engine did not declare required feature: setboard"))
                    self.set_finished()
                    return

                if not engine.features.get("reuse", 1):
                    LOGGER.warning("%s: Rejecting feature reuse=0", engine)
                    engine.send_line("reject reuse")
                if not engine.features.get("sigterm", 1):
                    LOGGER.warning("%s: Rejecting feature sigterm=0", engine)
                    engine.send_line("reject sigterm")
                if engine.features.get("usermove", 0):
                    LOGGER.warning("%s: Rejecting feature usermove=1", engine)
                    engine.send_line("reject usermove")
github niklasf / python-chess / chess / engine.py View on Github external
def _setoption(self, name: str, value: ConfigValue) -> None:
        try:
            value = self.options[name].parse(value)
        except KeyError:
            raise EngineError("engine does not support option {} (available options: {})".format(name, ", ".join(self.options)))

        if value is None or value != self.config.get(name):
            builder = ["setoption name", name]
            if value is False:
                builder.append("value false")
            elif value is True:
                builder.append("value true")
            elif value is not None:
                builder.append("value")
                builder.append(str(value))

            self.send_line(" ".join(builder))
            self.config[name] = value

chess

A chess library with move generation and validation, Polyglot opening book probing, PGN reading and writing, Gaviota tablebase probing, Syzygy tablebase probing, and XBoard/UCI engine communication.

GPL-3.0
Latest version published 30 days ago

Package Health Score

82 / 100
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