How to detect key release with python ( not keypress)?

Question

How can I detect key release with python 3 ?

Like if I pressed the key a for 1 second , when I remove my finger from the key ( releasing the key ) , It will print("Key 'a' pressed then released").

I trying to do it with module keyboard but I have no idea about how to use it for this. I used to detect keypress with it.
msvcrt module don't work for me but if msvcrt can do what I want , then you can answer me.

Note:

I Don't want to use Pygame or any other module which will show pop-ups

[this?](https://github.com/boppreh/keyboard#keyboard.on_release). You could follow a bit on the link you provided — Ma0, Aug 09 '17 at 08:05
Your module literally contains one example that does what you ask: https://github.com/boppreh/keyboard/blob/master/examples/pressed_keys.py — BoboDarph, Aug 09 '17 at 08:15

score 6 · Accepted Answer · edited Aug 11 '17 at 14:10

You can use the pynput module:

from pynput import keyboard

def on_key_release(key):
    print('Released Key %s' % key)

with keyboard.Listener(on_release = on_key_release) as listener:
    listener.join()

According to the documentation of pynput keyboard listener is a thread, which calls the function specified on on_release with the key argument. You can also specify a on_press function.

Edit:

As asked in discussions, you can stop the listener by returning false from the on_key_release function. Like that:

def on_key_release(key):
    print('Released Key %s' % key)
    return False

It's Good but make please make it more understandable. – Nouman Aug 09 '17 at 08:20 — Nouman, Aug 09 '17 at 08:20

score 5 · Answer 2 · edited Aug 10 '17 at 08:21

5

You can use tkinter for it:

from tkinter import *
def keyup(e):
    print('up', e.char)
def keydown(e):
    print('down', e.char)

root = Tk()
frame = Frame(root, width=100, height=100)
frame.bind("<KeyPress>", keydown)
frame.bind("<KeyRelease>", keyup)
frame.pack()
frame.focus_set()
root.mainloop()

edited Aug 10 '17 at 08:21

Nouman

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answered Aug 09 '17 at 08:10

Acafed

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3

Read my comment again. – Nouman Aug 09 '17 at 08:24
oh, it can be without pop up in other way i guess i am know this way maybe someone else know other way... – Acafed Aug 09 '17 at 08:27

score 0 · Answer 3 · answered Aug 09 '17 at 08:20

Similar to Acafed's answer, using tkinter and assuming you are using python3 you could easy do in this way:

from tkinter import Tk,Frame #importing only necessary stuff.

def keyrelease(e):
    print('The key was released: ', repr(e.char))

root = Tk()
f = Frame(root, width=100, height=100)
f.bind("<KeyRelease>", keyrelease)
f.pack()
root.mainloop()

How to detect key release with python ( not keypress)?

How can I detect key release with python 3 ?

Note:

3 Answers3

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