python 倒计时

Sure! Here's a Python code snippet for implementing a countdown:

import time

def countdown(seconds):
    while seconds > 0:
        print(seconds)
        time.sleep(1)
        seconds -= 1
    print("Time's up!")

countdown(10)  # Replace 10 with the desired number of seconds

This code uses a `countdown` function that takes the number of seconds as an argument. It then loops through the countdown, printing each second and pausing for one second using the `time.sleep()` function. After the countdown reaches zero, it prints "Time's up!".

Feel free to adjust the duration by changing the argument passed to the `countdown` function.