portfolio.py 文件源码

def __init__(self, currency: Currency, qty: str = 0, min_fraction: Optional[str] = None,
                 max_fraction: Optional[str] = None) -> None:
        self.persistent_redis_server = StrictRedis(host='localhost', port=6379, db=1)
        self.currency = currency
        self.qty = Decimal(qty)

        try:
            self.min_fraction = min_fraction or PORTFOLIO_MAKEUP[currency.name][0]
        except (KeyError, IndexError):
            self.min_fraction = '0.0'
        self.min_fraction = Decimal(self.min_fraction)

        try:
            self.max_fraction = max_fraction or PORTFOLIO_MAKEUP[currency.name][1]
        except (KeyError, IndexError):
            self.max_fraction = '1.0'
        self.max_fraction = Decimal(self.max_fraction)