increase clipboard memory with python

clipboard.py

# When Ctrl+C is pressed, this script will add the current value of
# clipboard into a stack (deque) and when Shift+Alt+V is pressed
# it will pop the leftmost value and paste it on the screen
# until stack is empty

import gi
gi.require_version('Gtk', '3.0')
gi.require_version('Gdk', '3.0')
from keybinder.keybinder_gtk import KeybinderGtk #https://github.com/LiuLang/python3-keybinder
from pykeyboard import PyKeyboard #https://github.com/PyUserInput/PyUserInput
from gi.repository import GLib
from collections import deque
import signal
import xerox #https://github.com/kennethreitz/xerox
import time

stack = deque(maxlen=5)
keyboard = PyKeyboard()

# simulate Ctrl+V so when ever Shift+Alt+V is pressd
# it's actualy pressing Ctrl+V

def simulatePaste():
    keyboard.press_key(keyboard.control_key)
    keyboard.tap_key('v')
    keyboard.release_key(keyboard.control_key)

def copy():
    content = xerox.paste()
    stack.append(content)
    
# pop the leftmost value and paste it into clipboard
# until stack is empty
def paste():
    size = len(stack)
    if size != 0 :
        content = stack.popleft()
        xerox.copy(content)
        #sleep for 1 second so you release the buttons and
        #then simulate the paste hotkey
        time.sleep(1)
        simulatePaste()
        print(content)

def main():
    # use the default gtk main loop in gtk based applications.
    loop = GLib.MainLoop.new(None, False)

    copy_key = '<Ctrl>C'
    copy_cb = lambda *args: copy()

    paste_key = '<Shift><lAlt>V'
    paste_cb = lambda *args: paste()

    keybinder = KeybinderGtk()
    keybinder.register(copy_key, copy_cb)
    keybinder.register(paste_key, paste_cb)
    keybinder.start()
    loop.run()

if __name__ == '__main__':
    signal.signal(signal.SIGINT, signal.SIG_DFL) #enable ctrl+c to break the program
    main()