Key press events outside of python window (Python) - python

How can I detect a key press outside of a python window(something like a tkinter window). So for example if I pressed the 'a' key while on Chrome, how would I detect I pressed that?

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How to trigger mouse clicks only when a key is pressed ? In Python

I want to make a program or when I click on a key the mouse clicks automatically (as long as I click on the key) if I do not click on the key it stops.
I don't want the clicks to happen only when I touch the key once, but as long as the key is held down (It can also be the left button of the mouse pressed that trigger clicks like razer synapse mouses)
Any Idea ?
EDIT 1 :
This one works but not when a key is held down (even when the click is held down it doesn't work anyway) it only detects a single click on the mouse and then it clicks by itself instead of clicking ONLY when the key is held down...
import pyautogui, time
from pynput import mouse
from pynput.mouse import Button,Controller
from tkinter import *
from tkinter import ttk
root = Tk()
root.geometry('500x400')
combo = ttk.Combobox(root,values=['ctrl','shift','alt'],width=5)
combo.set('Key...')
combo.pack()
def on_click(x, y, button, pressed):
if button == mouse.Button.left:
while pressed:
pyautogui.click()
pyautogui.PAUSE = 0.1
else:
return False
with mouse.Listener(
on_click=on_click
) as Listener:
Listener.join()
root.mainloop()
You can use the mouse module (pip install mouse) to setup mouse hooks (hotkeys) that will let you trigger the clicking globally. However, in order to manage the beginning and end of this clicking, you will need to use a new thread (here is a short intro to threading if you want to learn more about it). You will want to start a thread when you press down your hotkey. This thread will continuesly click until you trigger an event that stops it. You will trigger this event by releasing your hotkey. Thus, the thread (and with it the clicking) will begin when you press the hotkey down and end when you let it back up.
Here is a piece of code that does exactly that using the middle (scroll) mouse button as the hotkey:
import mouse # pip install mouse
import threading
import pyautogui
pyautogui.PAUSE = 0.1 # set the automatic delay between clicks, default is 0.1
def repeat_function(kill_event):
# as long as we don't receive singal to end, keep clicking
while not kill_event.is_set():
pyautogui.click()
while True:
# create the event that will kill our thread, don't trigget it yet
kill_event = threading.Event()
# create the thread that will execute our clicking function, don't start it yet
new_thread = threading.Thread(target=lambda: repeat_function(kill_event))
# set a hook that will start the thread when we press middle mouse button
mouse.on_button(new_thread.start, (), mouse.MIDDLE, mouse.DOWN)
# set a hook that will kill the thread when we release middle button
mouse.on_button(kill_event.set, (), mouse.MIDDLE, mouse.UP)
# wait for user to use the hotkey
mouse.wait(mouse.MIDDLE, mouse.UP)
# remove hooks that used the killed thread and start again with a new one
mouse.unhook_all()
If you want to use the right mouse button instead, replace mouse.MIDDLE with mouse.RIGHT. I would not recommend using the left mouse button as the hotkey, as pyautogui will simulate clicking this button and likely break the program. If you want to use a key on the keyboard as the hotkey, check out the keyboard module. The concept there is the exact same.
Note that as this code is implemented, it will not be able to do anything else while waiting for the hotkey and processing it. You will need to use it as a separate python program if you want to use it as-is. You could also implement this code to run in a separate thread during another program, but it would definitely be easier to just launch it as a stand-alone script.

Why does this auto-clicker program stop when it starts clicking?

I am in the process of writing an auto-clicker that will work by holding down a button. I've checked, I haven't seen anywhere in the python community an auto-clicker that works on this principle.
When the program detects that I press the left mouse button it automatically starts clicking. Then, it detects this clicking as if it was me clicking so the program stops.
I'd like the program to click with a given frequency so long as the left mouse button is pressed, and to stop when it is released. Is there a way to accomplish this?
import time
import mouse
from pynput.mouse import Button, Controller
start = Controller()
while True:
time.sleep(0.0001)
while mouse.is_pressed("left"):
start.click(Button.left)
time.sleep(0.1)

Reacting to keyboard input without it being in the terminal in python 3

I am iterating through files in a folder, and for each file I want to be able to press either "y" or "n" on the keyboard (not in the terminal, just listen to the keystroke event) regardless of the focus window and do something with that information. I.e. for each iteration, I don't want to have to move my mouse to the terminal, click it, press "y" and press enter. Just n or y instantly and move to the next iteration. Is this possible and if so how do I do it? It is on linux if it matters.
you need some kind of keyboard event listener
i think Tkinter has it
otherwise use some other python library
1 example: Detecting a keypress in python while in the background

Trigger action on button press on raspberry

I want to trigger an action on button press whatever I'm doing in the program. This button press have to change a global value necessary to do some different action based on this value. In the while loop I'm reading from RFID module if a valid card are detected. When I press the button without reading a card, the program runs well, but when I detect a card, the button doesn't trigger my callback function.
Here's the code:
http://pastebin.com/cvtehZyZ

Python keyboard event callback

I want some of my class functions to be called when a some keyboard keys are pressed, no matter which window is active. how to do that in LINUX. What I was using until now is OpenCV and waitKey() function but for that I need to show a window and have it active when pressing a keyboard key. I do have a main loop always running where the pressed key can be checked but it would be nice to have a solution where no loop is needed.

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