鼠标向上/向下之间的秒表

我试图通过在 while 循环中使用简单的秒表来测试鼠标按下和鼠标按下事件之间的时间。鼠标按下事件工作正常，但是当我释放鼠标以进行鼠标弹起时，秒数继续增加并且不会停止。

from pygame import *
import time
screen = display.set_mode((160, 90))
sec = 0
while True:
    new_event = event.poll()
    if new_event.type == MOUSEBUTTONDOWN:
        while True: # Basic stopwatch started
            time.sleep(1)
            sec += 1
            print(sec)
            # In loop, when mouse button released,
            # supposed to end stopwatch
            if new_event.type == MOUSEBUTTONUP:
                break
    display.update()

我希望秒表在鼠标释放后结束。例如。如果只是单击鼠标，则秒数应为 1。如果按住鼠标 5 秒，则不应持续超过 5 秒。

Use pygame.time.get_ticks https://www.pygame.org/docs/ref/time.html#pygame.time.get_ticks获取此后的毫秒数pygame.init()被称为。
存储时的毫秒数MOUSEBUTTONDOWN并计算主循环中的时间差：

from pygame import *

screen = display.set_mode((160, 90))

clock = time.Clock()
run = True
started = False
while run:

    for new_event in event.get():
        if new_event.type == QUIT:
            run = False

        if new_event.type == MOUSEBUTTONDOWN:
            start_time = time.get_ticks()
            started = True

        if new_event.type == MOUSEBUTTONUP:
            started = False

    if started:        
        current_time = time.get_ticks()
        sec = (current_time - start_time) / 1000.0
        print(sec)

    display.update()