有转发时间的任务

Question

我在完成任务时遇到困难。该任务要求用户输入时间（1 到 12 之间），然后声明是上午还是下午，以及将其转发到多少小时。转发的时间还应该显示上午/ pm 时间戳取决于转发的数量。示例：Input time: 8am or pm : amforward: 5new time: 1pm我已经尝试过这个：time = eval(input('Input time(1-12):'))ampm = eval(input('am or pm?'))forward = eval(input('Forward:'))if ampm == am:    if time + forward > 24:        new time = (time + forward)%24        x = 'am'    else:        new time = (time + forward)%12        x = 'pm'    print('New time is:' , new time , x)if ampm == pm:    if time + forward > 12:        new time = (time + forward)%12        x = 'pm'    else:        new time = (time + forward)%24        x = 'am'    print('New time is:' , new time , x)

Answer 1

我建议简单地将时间转换为 24 小时格式，转发，然后转换回 12 小时（上午/下午）格式。

我是这样做的：

time = int(input('Input time(1-12):'))

ampm = input('am or pm?')

forward = int(input('Forward:'))

# first get the 24h formatted time

time_24 = time + 12 if ampm == 'pm' else time

# then forward time to max 24, else start over from 0

time_24 = (time_24 + forward) % 24

# finally convert back to 12h(am/pm) format

time_12 = f'{time_24-12}pm' if time_24 > 12 else f'{time_24}am'

# print out the forwarded time

print(time_12)