Allow for random typing with no ill consequences. Think of it as a padded room for your fingers.

keyboard_scribble.py

from collections import deque
from contextlib import contextmanager
from curses.ascii import ESC, ETX
import sys
import termios
import tty

ESC = chr(ESC)
ETX = chr(ETX)


@contextmanager
def raw_terminal():
    stdin_filenum = sys.stdin.fileno()
    old_tty_attr = termios.tcgetattr(stdin_filenum)
    try:
        tty.setraw(stdin_filenum)
        yield
    finally:
        termios.tcsetattr(stdin_filenum, termios.TCSADRAIN, old_tty_attr)
        print()


def main():
    print('Press Esc or Ctrl-C three times to exit.\r')

    last_three = deque(maxlen=3)

    with raw_terminal():
        while True:
            c = sys.stdin.read(1)

            last_three.append(c)
            if len(last_three) == 3 and all( c in f'{ESC}{ETX}' for c in last_three ):
                break

            print(c, end='')
            sys.stdout.flush()


if __name__ == '__main__':
    main()