def __init__(self,
                 cost=DEFAULT_PER_SHARE_COST,
                 min_trade_cost=DEFAULT_MINIMUM_COST_PER_TRADE):
        self.cost = float(cost)
        self.min_trade_cost = None if min_trade_cost is None\
            else float(min_trade_cost)
@param connectedDeferred: The L{Deferred} that will callback
dataset/ETHPy150Open quantopian/zipline/zipline/finance/commission.py/PerShare.__init__--crossover with--dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/internet/endpoints.py/_WrappingProtocol.__init__