Making a loop never ending

[be80be]

I know this probably crazy but i cant for the life of me figure how to to loop a while loop to keep looping and not stop.

[andrewleech]

while True:
    do_stuff()
    # if not using asyncio, might want time.sleep() or something to allow background tasks to happen 
    await asyncio.sleep_ms(100)
    # in case you do ever want to break out of the loop
    if _done:
       break

[be80be]

Here what I was doing
``import max7219
import time
from machine import Pin, SPI
spi = SPI(1, baudrate=10000000, polarity=0, phase=0)
display = max7219.Matrix8x8(spi, Pin(15), 4)
#while True:
display.brightness(0)
display.fill(0)
display.text('I',0,0,1)
display.show()
time.sleep(1.5)
display.fill(0)
display.show()
display.text('No',0,0,1)
display.show()
time.sleep(1.5)

``

[be80be]

Every thing i try threw and error
MPY: soft reboot
Traceback (most recent call last):
File "", line 7
SyntaxError: invalid syntax

[robert-hh]

The error flagged at line 7 could be caused back to line 5. Looking at that line, the symbol Matrix8x8 looks weird. The two x characters look different. But that may just be my PC showing them as such.

[bixb922]

Please use 3 backticks to format code, so that we can read it clearly.

May he the problem is that the while has a comment # before it and the following lines are indented?

[be80be]

import max7219
import time
from machine import Pin, SPI
spi = SPI(1, baudrate=10000000, polarity=0, phase=0)
display = max7219.Matrix8x8(spi, Pin(15), 4)
while True:
do_stuff()
display.brightness(0)
display.fill(0)
display.text('I',0,0,1)
display.show()
time.sleep(1.5)
display.fill(0)
display.show()
display.text('No',0,0,1)
display.show()
time.sleep(1.5)
##await time.sleep_ms(100)
if _done:
break
This didn't work still problems
MPY: soft reboot
Traceback (most recent call last):
File "", line 20, in
SyntaxError: 'break'/'continue' outside loop

[andrewleech]

With python the indentation of the file is important, it's part of the core syntax.
Things like while or if all need their following code to be indented to show what's being run, as opposed to languages like C that use { and } to show these things

[be80be]

""
import max7219
import time
from machine import Pin, SPI
spi = SPI(1, baudrate=10000000, polarity=0, phase=0)
display = max7219.Matrix8x8(spi, Pin(15), 4)
while True:

display.brightness(0)
display.fill(0)
display.text('I',0,0,1)
display.show()
time.sleep(1.5)
display.fill(0)
display.show()
display.text('Got',0,0,1)
display.show()
time.sleep(1.5)
time.sleep_ms(100)

""

Thanks a bunch I got too work

[be80be]

Thanks andrewleech
Andrew Leech