def set_commission(self, commission):
if not isinstance(commission, (PerShare, PerTrade, PerDollar)):
raise UnsupportedCommissionModel()
if self.initialized:
raise OverrideCommissionPostInit()
self.commission = commission
def set_commission(self, commission):
if self.initialized:
raise OverrideCommissionPostInit()
self.commission = commission
