S&S's version for a common ANODE 7-segment display driven by Raspberry Pi

4d7sCommonAnode.py

# S&S's version for a common ANODE 7-segment display driven by Raspberry Pi
# code modified, tweaked and tailored from code by bertwert 
# on RPi forum thread topic 91796
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
 
# GPIO ports for the 7seg pins
segments =  (11,4,23,8,7,10,18,25)
# 7seg_segment_pins (14,16,13,3,5,11,15,7) +  670R inline
 
for segment in segments:
    GPIO.setup(segment, GPIO.OUT)
    GPIO.output(segment, 1)
 
# GPIO ports for the digit 0-3 pins 
digits = (22,27,17,24)
# 7seg_digit_pins (1,2,6,8) digits 0-3 respectively
 
for digit in digits:
    GPIO.setup(digit, GPIO.OUT)
    GPIO.output(digit, 0)
 
# note these digits are all inverted compared with the common cathode display:
num = {' ':(1,1,1,1,1,1,1), 
    '0':(0,0,0,0,0,0,1),
    '1':(1,0,0,1,1,1,1),
    '2':(0,0,1,0,0,1,0),
    '3':(0,0,0,0,1,1,0),
    '4':(1,0,0,1,1,0,0),
    '5':(0,1,0,0,1,0,0),
    '6':(0,1,0,0,0,0,0),
    '7':(0,0,0,1,1,1,1),
    '8':(0,0,0,0,0,0,0),
    '9':(0,0,0,0,1,0,0)}
 
try:
    while True:
        n = time.ctime()[11:13]+time.ctime()[14:16]
        s = n.rjust(4)
        for digit in range(4):
            if (int(time.ctime()[18:19])%2 == 0) and (digit == 1):
                GPIO.output(25, 0)
            else:
                GPIO.output(25, 1)
            for loop in range(0,7):
                GPIO.output(segments[loop], num[s[digit]][loop])
            GPIO.output(digits[digit], 1)
            time.sleep(0.005)
            GPIO.output(digits[digit], 0)
finally:
    GPIO.cleanup()