如何让Python中timedelta超24小时仍以hh:mm:ss格式输出

嘿，这个问题我之前也碰到过！datetime.timedelta 默认的字符串输出确实会把超过24小时的部分拆成天数显示，但我们可以自己手动计算总时长的小时、分钟、秒，然后格式化成想要的 hh:mm:ss 格式。

核心思路 #

timedelta 对象提供了 total_seconds() 方法，可以获取总时长的秒数。我们可以基于这个数值，通过整除和取余运算拆解出总小时数（不受24小时限制）、剩余分钟和秒：

1. 计算总秒数：total_seconds = int(total.total_seconds())
2. 总小时 = 总秒数 // 3600（3600秒=1小时）
3. 剩余秒数 = 总秒数 % 3600
4. 分钟 = 剩余秒数 // 60
5. 秒 = 剩余秒数 % 60

最后用字符串格式化把分钟和秒补零到两位，小时保持原样即可（支持任意位数，比如30小时、100小时都能正常显示）。

修改你的代码 #

找到你代码中输出总时长的那一行：

print("The total duration is: " + str(total))

替换成以下代码：

total_seconds = int(total.total_seconds())
total_hours = total_seconds // 3600
remaining_secs = total_seconds % 3600
mins = remaining_secs // 60
secs = remaining_secs % 60
# 格式化输出，分钟和秒补零为两位
print(f"The total duration is: {total_hours}:{mins:02d}:{secs:02d}")

额外小优化 #

你代码里的导入语句有点小问题：

import datetime from datetime import timedelta

应该改成以下二者之一：

• 只导入timedelta：from datetime import timedelta，这样后面直接用timedelta(hours=...)
• 导入整个datetime模块：import datetime，后面用datetime.timedelta(...)（和你现有代码的用法一致）

修改后的完整代码 #

from datetime import timedelta

# intro
print("Welcome to TimeCalc")
print("Calculating Durations")
clear = True

while clear == True:
    # first input
    firstNumber = True
    while firstNumber == True:
        time_1 = input("Please enter a time [hh:mm:ss] including 0s: ")
        if len(time_1) > 0 and len(time_1) >= 8 and time_1[-6] == ":" and time_1[-3] == ":" and int(time_1[-5:-3]) < 60 and int(time_1[-2:]) < 60:
            hours_1 = time_1[:-6]
            minutes_1 = time_1[-5:-3]
            seconds_1 = time_1[-2:]
            hours_1 = int(hours_1)
            minutes_1 = int(minutes_1)
            seconds_1 = int(seconds_1)
            firstNumber = False
        else:
            print("Invalid Syntax")
    time_1 = timedelta(hours=hours_1, minutes=minutes_1, seconds=seconds_1)
    
    cont = True
    while cont == True:
        # second input
        secondNumber = True
        while secondNumber == True:
            time_2 = input("Please enter a time to add [hh:mm:ss] including 0s: ")
            if len(time_2) > 0 and len(time_2) >= 8 and time_2[-6] == ":" and time_2[-3] == ":" and int(time_2[-5:-3]) < 60 and int(time_2[-2:]) < 60:
                hours_2 = time_2[:-6]
                minutes_2 = time_2[-5:-3]
                seconds_2 = time_2[-2:]
                hours_2 = int(hours_2)
                minutes_2 = int(minutes_2)
                seconds_2 = int(seconds_2)
                secondNumber = False
            else:
                print("Invalid Syntax")
        time_2 = timedelta(hours = hours_2, minutes = minutes_2, seconds = seconds_2)
        
        total = time_1 + time_2
        # 自定义格式化输出
        total_seconds = int(total.total_seconds())
        total_hours = total_seconds // 3600
        remaining_secs = total_seconds % 3600
        mins = remaining_secs // 60
        secs = remaining_secs % 60
        print(f"The total duration is: {total_hours}:{mins:02d}:{secs:02d}")
        
        # continue, clear, or exit
        choice = input("Continue: Y | Clear: N | Exit: X: ")
        if choice == "Y" or choice == "y":
            time_1 = total
        elif choice == "N" or choice == "n":
            cont = False
        elif choice == "X" or choice == "x":
            quit()

这样修改后，不管总时长是25小时还是100小时，都会以hh:mm:ss的格式显示，比如25小时30分15秒会输出25:30:15。

内容的提问来源于stack exchange，提问作者Arryn McLean