Question

我正在创建一个python倒计时程序，但我遇到了麻烦。

这是我的代码：

import time

def countdown(count):
    while (count >= 0):
        print ("Time remaining: "+ str(count) + " seconds")
        count -= 1
        time.sleep(1)

countdown(120)
print("Times up!")
time.sleep(3)

我得到的输出是：

Time remaining: 120 seconds
Time remaining: 119 seconds
Time remaining: 118 seconds
Time remaining: 117 seconds
Time remaining: 116 seconds

我想将程序更改为分钟和秒来进行程序输出：

You have 2 minutes and 2 seconds remaining.
You have 2 minutes and 1 seconds remaining.
You have 2 minutes and 0 seconds remaining.
You have 1 minutes and 59 seconds remaining.

等。

如何转换？

Answer 1

将打印时间的行更改为：

print("You have {} minutes and {} seconds remaining.".format(*divmod(count, 60)))

以下是完整的脚本：

import time

def countdown(count):
    while (count >= 0):
        print("You have {} minutes and {} seconds remaining.".format(*divmod(count, 60)))
        count -= 1
        time.sleep(1)

print("Welcome. This program will put your computer to sleep in 5 minutes.")
print("To abort shutdown, please close the program.\n") 

countdown(120)
print("Times up!")
time.sleep(3)

示例运行：

Welcome. This program will put your computer to sleep in 5 minutes.
To abort shutdown, please close the program.

You have 2 minutes and 0 seconds remaining.
You have 1 minutes and 59 seconds remaining.
You have 1 minutes and 58 seconds remaining.
You have 1 minutes and 57 seconds remaining.
You have 1 minutes and 56 seconds remaining.
You have 1 minutes and 55 seconds remaining.
...

最后，这是divmod上的引用和str.format上的引用。

Answer 2

每次迭代都会休眠1秒，因此count是剩余的秒数。

分钟数为count / 60，剩余秒数为count % 60（模数）。所以你可以写点像

mins = count / 60
secs = count % 60

print "Time remaining is %d minutes %d seconds" % (mins, secs)

您可以在一次操作mins, secs = divmod(count, 60)中计算分钟数和秒数。

请注意sleep()不准确;所有它承诺的是你的程序将睡不少于指定的数量。您会注意到，与挂钟相比，有时您的程序暂停几秒钟。

如果你想要更高的精度，你应该计算循环应该结束的最后时间，检查每次迭代的当前时间，并显示它们之间的真正差异。

Python倒计时游戏需要指导

2 个答案: