CODEWITHSUNDEEP
pythonpython-3.x
Axxi
Axxi

Reputation: 193

Can't iterate over set() properly?

I'm using python to create an empty set(), every keystroke i press adds to that set, which works very well!

But when i for example press "s" and try to iterate over the set, it always returns false. What am i doing wrong? Thanks!

from pynput import keyboard

pressed = set()

def on_press(key):
    pressed.add(key)
    # THIS RETURNS FALSE EVERYTIME!!! ???
    print('s' in pressed)


def on_release(key):
    if key in pressed:
        pressed.remove(key)


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

Upvotes: 0

Views: 214

Answers (2)

quamrana
quamrana

Reputation: 39354

You are just storing instances of pynput.keyboard.<platform>.KeyCode. You meant to do this:

def on_press(key):
    pressed.add(key.char)
    print('s' in pressed)

Upvotes: 2

match
match

Reputation: 11060

The object you are adding to the set is not the string s but instead a 'pynput.keyboard._xorg.KeyCode' class instance. So your in test will fail as these items are not equal.

To get the key's character, you need to do:

pressed.add(key.char)

Upvotes: 4

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