from utime import sleep
import segment7 as seg

while 1:
    for num in range(99,-1,-2):
        seg.disp7(num)
        sleep(0.4)



main.py

diagram.json

from machine import Pin

seg7b=(Pin(0,Pin.OUT),Pin(1,Pin.OUT),Pin(2,Pin.OUT),
      Pin(3,Pin.OUT),Pin(4,Pin.OUT),Pin(5,Pin.OUT),
      Pin(6,Pin.OUT))   #abcdefg
seg7a=(Pin(28,Pin.OUT),Pin(27,Pin.OUT),Pin(26,Pin.OUT),
      Pin(22,Pin.OUT),Pin(21,Pin.OUT),Pin(20,Pin.OUT),
      Pin(19,Pin.OUT))   #abcdefg

pat7=((1,1,1,1,1,1,0),(0,1,1,0,0,0,0),(1,1,0,1,1,0,1),
      (1,1,1,1,0,0,1),(0,1,1,0,0,1,1),(1,0,1,1,0,1,1),
      (1,0,1,1,1,1,1),(1,1,1,0,0,0,0),(1,1,1,1,1,1,1),
      (1,1,1,1,0,1,1))

def disp7(num):
    a=num%10
    b=int(num/10)
    for i,j in zip(seg7a,pat7[a]):
        i.value(not(j))
    for i,j in zip(seg7b,pat7[b]):
        i.value(j)
