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 time

time2 = datetime.strptime(b,"%H%M") 

diff = time1 -time2

diff.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) / 60minutes_elapsed = to_minutes(a) - to_minutes(b)hours_elapsed = to_hours(minutes_elapsed)