Subj : Re: Python
To   : Nightfox
From : Mortifis
Date : Mon Dec 10 2018 10:35 am

 >   Re: Python
 >   By: Mortifis to All on Sun Dec 09 2018 01:40 pm

 >  Mo> Anyone into Python? I have a few questions relating to nested loops

 > I've done a bit of Python for work.

Seems Python is very finicky about use of proper indentation :/  I am (trying)
to code some random light sequences for use with my Raspberry Pi, mostly works,
however, when I try to set a while ... for ... try while ... blah blah blah it
complains about indentation. when I remove the first x = 0 ... while x < cycle:
x = x + 1 it seems to work correctly.

here is my spaghetti code:

#!/usr/bin/python
import RPi.GPIO as GPIO
import time
import random
import mutagen.mp3
import sys

GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)

# init list with pin numbers
seq0 = [2, 3, 4, 17, 27, 22, 10, 9] # RPI GPIO PINS
seq1 = [3, 17, 22, 9]
seq2 = [2, 4, 27, 10]
seq3 = [2, 9, 3, 10, 4, 22, 17, 27, 27, 17, 22, 4, 10, 3, 9, 2]

from random import randint
rand = random.randint(0, 3)

mP3 = sys.argv[1]

from mutagen.mp3 import MP3
audio = MP3(mP3)
cycle = int(audio.info.length)
print '   Playing ', mP3, ' for ', cycle, 'seconds'

if mP3 == "letitgo.mp3":        
        rand = 1 # speeds timing up
        SleepTimeS = 0.2
        SleepTimeL = 0.1
else:
        SleepTimeS = 1.2 # normal speed
        SleepTimeL = 0.2

if rand == 0: seq = seq0
if rand == 1: seq = seq1
if rand == 2: seq = seq2
if rand == 3: seq = seq3

x = 0
while  x < cycle:
        x = x + 1

for i in seq: 
        GPIO.setup(i, GPIO.OUT) 
        GPIO.output(i, GPIO.HIGH)

# main loop

try:
        while True:

                for i in seq:
                        GPIO.output(i, GPIO.LOW)
                        time.sleep(SleepTimeS);
                        GPIO.output(i, GPIO.HIGH)
                        time.sleep(SleepTimeS);
                        GPIO.output(i, GPIO.LOW)
                        time.sleep(SleepTimeS);
                        GPIO.output(i, GPIO.HIGH)
                        time.sleep(SleepTimeL);

except KeyboardInterrupt:
  print "  Quit"

  GPIO.cleanup()

---
 þ Synchronet þ The Empty Keg BBS emptykeg.synchro.net:82 Lake Echo NS Canada

.