如何将输入的分钟/秒格式化为 datetime.now() 格式？

Question

我创建了一个程序，要求用户输入给定的TimeType (Seconds/Minutes) 和 objectivetime (integer)（例如，如果用户输入 Seconds 然后 5，那么目标时间是5 秒）。此外，该程序还会在开始时检查时间，然后检查之后的时间以计算出elapsed_time。然后我想检查elapsed_time 是否大于或等于objective time。我编写的代码如下所示（减去a 和b 之间的其他不相关代码）

import time, sys, os, random
a = datetime.datetime.now().replace(microsecond=0)
#random code...
b = datetime.datetime.now().replace(microsecond=0)
timetype = input("Enter time type: ")#Either Seconds or Minutes
objectivetime = input("Enter objective time: ")#This will be an integer
if timetype == 'Seconds':
    #convert objectivetime to seconds and present in same format as a or b
else:
    #convert objectivetime into minutes and present in same format as a or b
elapsed_time = b-a
if objectivetime<=elapsed_time:
    'Well done'
else:
    'You have exceeded the objective time'

有没有什么方法可以编辑代码以将目标时间格式化为与a和b（开始时间和结束时间）相同的方式？？

更新---------------------------------------------- ----------------------------------------

我如何计算出哪个时间更大（elapsed_time 或 objtime）？

查看更新的代码：

import time, sys, os, random
import datetime
a = datetime.datetime.now().replace(microsecond=0)
print(a)
#random code...
time.sleep(3)
b = datetime.datetime.now().replace(microsecond=0)
timetype = input("Enter time type: ")#Either Seconds or Minutes
objectivetime = input("Enter objective time: ")#This will be an integer
objectivetime = int(objectivetime) # I noticed you didn't do this in your code
delta = None
if timetype == 'Seconds':    
    delta = datetime.timedelta(seconds = objectivetime)
else:
    delta = datetime.timedelta(minutes = objectivetime)
objtime = a + delta
print(objtime)
#How would I work out which time is greater?? (elapsed_time or objtime)
elapsed_time = b-a
print(elapsed_time-objtime)

Answer 1

objectivetime = int(objectivetime) # I noticed you didn't do this in your code
delta = None

if timetype == 'Seconds':    
    delta = datetime.timedelta(seconds = objectivetime)
else:
    delta = datetime.timedelta(minutes = objectivetime)

objtime = a + delta

这将为您提供一个日期时间对象，例如 datetime.now()

要比较日期时间对象，您可以简单地使用比较运算符。例如，

b <= objtime # Finished before (or on) the objective time
b > objtime  # Finished after the objective time

您甚至不需要从b 中减去a！如果你仍然想，那就比较时间增量

elapsed_time <= delta # Finished before (or on) the objective time
elapsed_time > delta # Finished after the objective time