from machine import Pin
from time import sleep

a = Pin(0, Pin.OUT),  # a
b = Pin(1, Pin.OUT),  # b
c = Pin(2, Pin.OUT),  # c
d = Pin(3, Pin.OUT),  # d
e = Pin(4, Pin.OUT),  # e
f = Pin(5, Pin.OUT),  # f
g = Pin(6, Pin.OUT)   # g