Checking a specific key with pynput in Python

问题

dpressed = 0

def on_press(key):

    if key == ('d'):
        global dpressed
        dpressed+=1
        logging.info("D: %s" % dpressed)

When I run this code and press d, nothing happens, which I suspect is because the key needs to be called something else when checked. Does someone know what it should be?

回答1:

For anyone else that may have this problem, I imported KeyCode from pynput.keybord at the top. Then I changed ('d') to KeyCode.from_char('d'). This should work for anyone with this problem. There is a great explanation here

回答2:

You need to format the key to char format else it won't be equeal to the specific character.

Try

if key.char == ('d'):

Full code being:

dpressed = 0

def on_press(key):

    if key.char == ('d'):
        global dpressed
        dpressed+=1
        logging.info("D: %s" % dpressed)

回答3:

Do you have a listener?

Without a listener the code wont work. Try adding this at the very end of your code.

with Listener(
    on_press=on_press,
    on_release=on_release) as listener:
listener.join()

来源：https://stackoverflow.com/questions/53693820/checking-a-specific-key-with-pynput-in-python