Question

我的代码如下 - 是的，丑陋的。我正在学习python。它适用于开始/结束日期都是同一天的情况。

当start = 2017,6,15 6:00＆amp;结束= 2017,6,16 6:00 应用的if语句是start＆lt;早上6点。有人可以解释原因吗？它确实认识到1天是持续时间。

从datetime导入日期时间，日期，时间

def babysitting():

    (st_yr,st_mon,st_day) = [int(s) for s in input("Enter the start date in the format: YYYY,M,D: ").split(',')]
    (st_hr,st_min) = [int(s) for s in input("Enter the start time in 24hr format -> HH:MM: ").split(":")]
    (e_yr,e_mon,e_day) = [int(s) for s in input("Enter the end date in the format: YYYY,M,D: ").split(',')]
    (e_hr,e_min) = [int(s) for s in input("Enter the end time in 24hr format -> HH:MM: ").split(":")]

    st_date = date(st_yr,st_mon,st_day)
    st_time = time(st_hr,st_min)
    end_date= date(e_yr,e_mon,e_day)
    end_time = time(e_hr,e_min)

    start = datetime.combine(st_date,st_time)
    end = datetime.combine(end_date,end_time)

    ninePM = datetime.combine(end_date, time(21,00))
    sixAM = datetime.combine(end_date, time(6,00))

    if start >= sixAM:
        if end <= ninePM:
            normal_rate_duration = end - start
            normal_rate_seconds = normal_rate_duration.total_seconds()
            normal_rate_billing = round(((normal_rate_seconds / 60) / 60) * 2.5,2)
            print("Cost for babysitting is: $", normal_rate_billing)

        elif end > ninePM:
            normal_rate_duration = ninePM - start
            reduced_rate_pm_duration = end - ninePM
            normal_rate_seconds = normal_rate_duration.total_seconds()
            normal_rate_billing = round(((normal_rate_seconds / 60) / 60) * 2.5,2)
            reduced_rate_pm_seconds = reduced_rate_pm_duration.total_seconds()
            reduced_rate_pm_billing = round(((reduced_rate_pm_seconds / 60) / 60) * 1.75,2)
            print("Cost for babysitting is: $", normal_rate_billing + reduced_rate_pm_billing)

    if start < sixAM:
        if end <= ninePM:
            reduced_rate_am_duration = sixAM - start
            reduced_rate_am_seconds = reduced_rate_am_duration.total_seconds()
            reduced_rate_am_billing = round(((reduced_rate_am_seconds / 60) / 60) * 1.75,2)
            normal_rate_duration = end - sixAM
            normal_rate_seconds = normal_rate_duration.total_seconds()
            normal_rate_billing = round(((normal_rate_seconds / 60) / 60) * 2.5,2)
            print("Cost for babysitting is: $", normal_rate_billing + reduced_rate_am_billing)
        elif end > ninePM:
            reduced_rate_am_duration = sixAM - start
            reduced_rate_am_seconds = reduced_rate_am_duration.total_seconds()
            reduced_rate_am_billing = round(((reduced_rate_am_seconds / 60) / 60) * 1.75,2)
            normal_rate_duration = ninePM - sixAM
            normal_rate_seconds = normal_rate_duration.total_seconds()
            normal_rate_billing = round(((normal_rate_seconds / 60) / 60) * 2.5,2)
            reduced_rate_pm_duration = end - ninePM
            reduced_rate_pm_seconds = reduced_rate_pm_duration.total_seconds()
            reduced_rate_pm_billing =round(((reduced_rate_pm_seconds / 60) / 60) * 1.75,2)
            print("Cost for babysitting is: $", normal_rate_billing + reduced_rate_am_billing + reduced_rate_pm_billing)

babysitting()

Answer 1

你的if检查开始时间是否早于结束日期的早上6点，这当然是（前一天的某个时间或类似的事情）。您需要检查st_time是否早于早上6点（无论日期或st_date日期）。

如果在计算多天的时间时逻辑中断

1 个答案: