A spike to test reading from 2 sources in parallel without blocking

blockingheiko.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import signal
import threading
import time

def login():
    k = threading.Thread(target=keyboard)
    r = threading.Thread(target=rfid)

    k.start()
    r.start()

def keyboard():
    lock = threading.Lock()
    while True:
        with lock:
            user = input("keyboard> ")
            if user == 'lol':
                menu("keyboard")


def rfid():
    signal.signal(signal.SIGHUP, menu("rfid"))

def menu(source):
    while True:
        print("You are in menu as %s" % source)
        print("1: FOO")
        print("2: BAR")
        input("> ")

def main():
    login()

if __name__ == "__main__":
    main()