提问人：nadav shamir 提问时间：10/24/2018 更新时间：3/23/2021 访问量：986
将参数传递给 pynput 侦听器
Passing arguments to a pynput listener
问：
我使用 pynput listener 从键盘捕捉按键，但问题是我需要将参数传递给 on_press 和 on_release 函数，我只是不知道该怎么做。 您可以在代码中看到，我需要传递客户端套接字，以便我可以向他发送按下/释放的密钥。
def handle_keyboard_events(self, client_socket):
keyboard_listener = keyboard.Listener(on_press=self.on_key_press, on_release=self.on_key_release)
keyboard_listener.start()
def on_key_press(self, key):
key_press_command = KeyPress(key)
self.send_message(key_press_command, True, client_socket)
def on_key_release(self, key):
key_release_command = KeyRelease(key)
self.send_message(key_release_command, True, client_socket)
答：
0赞
alexzander
3/23/2021
#1
我看到你正在使用，所以你在一个.selfclass
为什么不在构造函数中使用？self.client_socket = client_socket
# update your constructor with self.client_socket
def __init__(client_socket, **other_args_of_yours):
# use this object variable when you activate key listener
self.client_socket = client_socket
或添加方法：self.client_socket = client_sockethandle_keyboard_events()
def handle_keyboard_events(self, client_socket):
self.client_socket = client_socket # <----- update
keyboard_listener = keyboard.Listener(
on_press=self.on_key_press,
on_release=self.on_key_release
)
keyboard_listener.start()
以及 和 方法self.client_socketpressrelease
def on_key_press(self, key):
key_press_command = KeyPress(key)
self.send_message(key_press_command, True, self.client_socket) # <--- update
def on_key_release(self, key):
key_release_command = KeyRelease(key)
self.send_message(key_release_command, True, self.client_socket) # <--- update
或
如果你真的想传递给你的和方法，你可以试试这个：client_socketpressrelease
def handle_keyboard_events(self, client_socket):
# use lambda to pass the client socket
# with this method, after you get the `key` you can pass additional params to on_press and on_release
keyboard_listener = keyboard.Listener(
on_press=lambda key: self.on_key_press(key, client_socket), # <--- client socket passed
on_release=lambda key: self.on_key_release(key, client_socket) # <--- client socket passed
)
keyboard_listener.start()
# add client socket as new arg
def on_key_press(self, key, client_socket):
key_press_command = KeyPress(key)
self.send_message(key_press_command, True, client_socket) # from params
# add client socket as new arg
def on_key_release(self, key, client_socket):
key_release_command = KeyRelease(key)
self.send_message(key_release_command, True, client_socket) # from params
你已经准备好了。
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