Method close

backtesting/backtesting.py:590–596

Place new `Order` to close `portion` of the trade at next market price.

(self, portion: float = 1.)

        return copy(self)._replace(**kwargs)

    def close(self, portion: float = 1.):
        """Place new `Order` to close `portion` of the trade at next market price."""
        assert 0 < portion <= 1, "portion must be a fraction between 0 and 1"
        # Ensure size is an int to avoid rounding errors on 32-bit OS
        size = copysign(max(1, int(round(abs(self.__size) * portion))), -self.__size)
        order = Order(self.__broker, size, parent_trade=self, tag=self.__tag)
        self.__broker.orders.insert(0, order)

    # Fields getters