我正在尝试制作一个倒数至0的计时器,然后开始递增计数。我正在使用时间和键盘模块。键盘模块是此链接上的模块:https://pypi.org/project/keyboard/
一切正常,我可以按一个按钮来关闭程序,但它仅在每次迭代开始时起作用。循环运行时,有没有办法在任何时候检查按键是否按下?我需要使用其他模块吗?
这是我的代码:
import time
import keyboard
m = 2
s = 0
count_down = True
while True:
if keyboard.is_pressed('q'):
break
print(f"{m} minutes, {s} seconds")
if count_down:
if s == 0:
m -= 1
s = 60
s -= 1
elif not count_down:
s += 1
if s == 60:
m += 1
s = 0
if m == 0 and s == 0:
count_down = False
time.sleep(1)
在这种情况下,使用回调是常见方法,这是解决方法:
import time
import keyboard
m = 2
s = 0
count_down = True
break_loop_flag = False
def handle_q_button():
print('q pressed')
global break_loop_flag
break_loop_flag = True
keyboard.add_hotkey('q', handle_q_button)
while True:
if break_loop_flag:
break
print(f"{m} minutes, {s} seconds")
if count_down:
if s == 0:
m -= 1q
s = 60
s -= 1
elif not count_down:
s += 1
if s == 60:
m += 1
s = 0
if m == 0 and s == 0:
count_down = False
time.sleep(1)