armbian orange pi: read matrix keypad 4x4 in python

i used  this python script to read matrix 4x4 keypad data to raspberry pi 

import RPi.GPIO as GPIO  #raspberry pi
import time

# these GPIO pins are connected to the keypad  RPI
L1 = 21
L2 = 23
L3 = 27
L4 = 29

C1 = 31
C2 = 33  
C3 = 35
C4 = 37

# Initialize the GPIO pins
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)

GPIO.setup(L1, GPIO.OUT)
GPIO.setup(L2, GPIO.OUT)
GPIO.setup(L3, GPIO.OUT)
GPIO.setup(L4, GPIO.OUT)

# Make sure to configure the input pins to use the internal pull-down resistors
GPIO.setup(C1, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(C2, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(C3, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(C4, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)

# It sends out a single pulse to one of the rows of the keypad
# and then checks each column for changes
# If it detects a change, the user pressed the button that connects the given line
# to the detected column

def readLine(line, characters):
    GPIO.output(line, GPIO.HIGH)
    if(GPIO.input(C1) == 1):
        print(characters[0])
    if(GPIO.input(C2) == 1):
        print(characters[1])

    if(GPIO.input(C3) == 1):
        print(characters[2])

    if(GPIO.input(C4) == 1):
        print(characters[3])

    GPIO.output(line, GPIO.LOW)

try:
    while True:
        # call the readLine function for each row of the keypad
        readLine(L1, ["1","2","3","e"])
        readLine(L2, ["4","5","6","r"])
        readLine(L3, ["7","8","9","t"])
        readLine(L4, ["q","0","w","y"])
        time.sleep(0.2)
except KeyboardInterrupt:
    print("\nApplication stopped!")

How can i create similar script for orange pi in armbian (in my case orange pi pc plus)?

it can by python or other language  doesnt matter

Edited November 19, 20223 yr by ari1234