from machine import Pin

a = 37
b = 38
c = 18
d = 16
e = 15
f = 36
g = 35


def led(x):
    Pin(x,Pin.OUT)

   
def num_1():
    led(b)
    led(c)

def num_2():
    pin_list = [a,b,g,e,d]
    for i in pin_list:
        led(i)

def num_3():
    pin_list = [a,b,g,c,d]
    for i in pin_list:
        led(i)

def num_4():
    pin_list = [f,g,b,c]
    for i in pin_list:
        led(i)

num_4()