如何将输入的分/秒格式设置为datetime.now（）格式？

Question

我已经创建了一个程序，要求用户输入给定的TimeType（Seconds/Minutes）和objectivetime（integer）（例如，如果用户输入秒数然后是5，则目标时间是5秒）。另外，该程序还会在开始时检查时间，然后检查后面的时间以计算出elapsed_time。然后我想检查elapsed_time是否大于或等于objective time。我已经写了如下所示的代码（减去a之间b其他不相关的代码）

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' 

有什么办法，该代码可以进行编辑，以获得客观时间的方法一样进行格式化a和b（start_time和end_time）??

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

我该如何计算哪个时间更长（elapsed_time或objtime）？

见更新的代码：

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 

这会给你喜欢datetime.now()

一个DateTime对象，比较DateTime对象，你可以简单地使用比较操作符。例如，

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

你甚至都不需要从b减去a！如果你仍然想，然后比较的时间差，而不是

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