#DayDayUpQ4.py def dayUP(df): dayup = 1 for i in range(365): if i % 7 in [6,0]: dayup = dayup*(1 - 0.01) else: dayup = dayup*(1 + df) return dayup dayfactor = 0.01 while dayUP(dayfactor) < 37.78: dayfactor += 0.001 print("工作日的努力参数是:{:.3f} ".format(dayfactor)) 使用保留字________定义函数,_______保留字判断条件是否成立,条件成立循环执行。