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#Day DayUpQ1 py dayup=pow(1.881,365) daydown =pow(0. 999, 365) print("向上:(:2f},向下:{:,2f}", format( dayup, daydown)
案例2
#Day DayUpQ2 py dayfactor = 0.005 dayup=pow(1+ dayfactor, 365) daydown =pow(1 - dayfactor,365) print("向上:(:2f},向下:{:,2f}", format( dayup, daydown)
eval ()和str()正好是相反的过程
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