from machine import Pin
from time import sleep as delay
# Definition of Pins connected to Seven Segments Display
A = Pin(2,Pin.OUT)
B = Pin(0,Pin.OUT)
C = Pin(4,Pin.OUT)
D = Pin(16,Pin.OUT)
E = Pin(17,Pin.OUT)
F = Pin(18,Pin.OUT)
G = Pin(5,Pin.OUT)

seg_lst = [A,B,C,D,E,F,G] # group the pins to list

# list of lists of pins to be turned on to display decimal digit
dig_seg_lst=[[A,B,C,D,E,F],
        [B,C],
        [A,B,G,D,E],
        [A,B,C,D,G],
        [F,G,C,B],
        [A,F,G,C,D],
        [A,C,D,E,F,G],
        [A,B,C],
        [A,B,C,D,E,F,G],
        [A,B,C,D,F,G]]

while True:
    for i in range(len(dig_seg_lst)): #for each decimal digit
        #check all the connected pins
        for segment in seg_lst:
            if segment in dig_seg_lst[i]:
                 #if it's in the digit list turn it on. else off
                segment.on()
            else:
                segment.off()
        #display the digit for 1 second
        delay(1)