如何计算经过的时间Python

Question

如果没有 datetime 函数，如何使用 python 计算经过的时间？在我的python版本上a = '2200'b = '1800'time1 = datetime.strptime(a,"%H%M") # convert string to timetime2 = datetime.strptime(b,"%H%M") diff = time1 -time2diff.total_seconds()/3600    # seconds to hour不起作用。也没有# Create datetime objects for each time (a and b)dateTimeA = datetime.datetime.combine(datetime.date.today(), a)dateTimeB = datetime.datetime.combine(datetime.date.today(), b)# Get the difference between datetimes (as timedelta)dateTimeDifference = dateTimeA - dateTimeB# Divide difference in seconds by number of seconds in hour (3600)  dateTimeDifferenceInHours = dateTimeDifference.total_seconds() / 3600

Answer 1

像这样的东西可以计算出来

a = '2200'

b = '1800'

to_minutes = lambda x: (float(x[:2]) * 60) + float(x[2:])

to_hours = lambda x: float(x) / 60

minutes_elapsed = to_minutes(a) - to_minutes(b)

hours_elapsed = to_hours(minutes_elapsed)