import time
import RPi.GPIO as GPIO
from keypad import keypad

GPIO.setwarnings(False)

if __name__ == '__main__':
    # Initialize
    kp = keypad(columnCount = 3)

    # waiting for a keypress
    digit = None
    while digit == None:
        digit = kp.getKey()
    # Print result
    print digit
    time.sleep(0.5)

    ###### 4 Digit wait ######
    seq = []
    for i in range(4):
        digit = None
        while digit == None:
            digit = kp.getKey()
        seq.append(digit)
        time.sleep(0.4)

    # Check digit code
    print(seq)
    if seq == [1, 2, 3, '#']:
        print "Code accepted"