How can I turn on/off LED of RPi.GPIO in the same number key?

Question

I am trying to write the following program (8Relay.py) using python on the Raspberry Pi.

I want to use the input from a GPIO pin to turn an LED on or off, depending on what input was pressed (1~8).

For example, if I input 17, GPIO17 should be turned on. When I input 17 again, GPIO17 should be turned off. This is what I want.

I'm not quite sure how I should go about doing this. My current code is listed below:

8Relay.py

#! /usr/bin/python

import os, sys, time
import RPi.GPIO as GPIO

Relays = [False, False, False, False, False, False, False, False]

GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)

GPIO.setup(17, GPIO.OUT)
GPIO.setup(18, GPIO.OUT)
GPIO.setup(27, GPIO.OUT)
GPIO.setup(22, GPIO.OUT)
GPIO.setup(23, GPIO.OUT)
GPIO.setup(24, GPIO.OUT)
GPIO.setup(25, GPIO.OUT)
GPIO.setup(4, GPIO.OUT)

G1 = 17
G2 = 18
G3 = 27
G4 = 22
G5 = 23
G6 = 24
G7 = 25
G8 = 4

for A in [17, 18, 27, 22, 23, 24, 25, 4]:
    GPIO.output(G1, 0)
    GPIO.output(G2, 0)
    GPIO.output(G3, 0)
    GPIO.output(G4, 0)
    GPIO.output(G5, 0)
    GPIO.output(G6, 0)
    GPIO.output(G7, 0)
    GPIO.output(G8, 0)

def Toggle(Relay):
    Current_situation = Relays[Relay]
    print Relays[Relay]
    Relays[Relay] = not Current_situation
    GPIO.output([17, 18, 27, 22, 23, 24, 25, 4][Relay-1], not Current_situation)
    return

Choice = "True"
while Choice:
    os.system("clear")
    for A, B in enumerate(Relays):
        if B:
            B = "High"
        else:
            B = "Low"
        print "Relay({}) [{}]".format([G1, G2, G3, G4, G5, G6, G7, G8][A], B)

try:
    Choice = int(input("GPIO number :"))
    if Choice >= 1 and Choice <= 8 :
        Toggle(Choice)
        
except:
    print "Something Failed."
    time.sleep(0.5)

Answer 1

Ok, so you're trying to do a state machine. There is a lot of ways to do this, but what you can do it's keep a boolean variable for each of the pin that you want to change.

Then, detect using input what gpio the user wants to change the state and "flip" the value on the state variable, something like:

if gpioState is False:
    gpiostate=True
else:
    gpioState=False;

Then, run a loop through all gpios using the boolean variables as the second parameter, like:

GPIO.output(G1, gpioState)