Question

我在python中写倒计时但是它没有用。

for countdown in 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, quit():
    print (countdown)

代码。倒计时只是放大并退出程序。有没有办法让倒计时符合实时和倒计时，并在10秒内退出。不是立即。

Answer 1

tl; dr python缓冲区打印，而python不是缓慢

import sys, time
for countdown in range(10,1,-1):
    print(countdown)
    sys.stdout.flush() #flushes buffer
    time.sleep(1) #sleep for one second, otherwise loop goes very quickly
print(0)
sys.stdout.flush()
# no quit needed. Program will end when file ends

Answer 2

你需要告诉它等待，否则它会像处理器一样快地运行代码。

from time import sleep
for countdown in range(10,0,-1):
  print(countdown)
  sleep(1)

Python计时器无法实时工作

2 个答案: