raspberry pi python. Button pressed

Question

I'm an absolute beginner when it comes to python and raspberry pi, I'm trying to just print a button pressed log when I press the button, however, I keep getting many errors. and after hours of struggling, i'm at the last one which says and excuse me for such a noob question but it says invalid syntax. now have googled python syntax and according to me what I have atm is correct. could someone help me out and explain what is happening? Thanks

The error is :

File "test.py", line 1 syntax Error : invalid syntax

test.py

import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)

GPIO.setup(18, GPIO.IN, pull_up_down=GPIO.PUD_UP)

while True:
input_state = GPIO.input(18)
if input_state == False:
    print('Button Pressed')
    time.sleep(0.2)

Please include the Stack trace or the errors you're receiving! — Ubdus Samad
– Ubdus Samad, Commented Aug 10, 2017 at 12:44

user7141836 · Accepted Answer · 2017-08-10 12:44:25Z

4

Check your indentation:

import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)

GPIO.setup(18, GPIO.IN, pull_up_down=GPIO.PUD_UP)

while True:
    input_state = GPIO.input(18)
    if input_state == False:
        print('Button Pressed')
        time.sleep(0.2)

answered Aug 10, 2017 at 12:44

user7141836

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10 Comments

Nanopili Over a year ago

at which line exactly?

user7141836 Over a year ago

after while True:

Nanopili Over a year ago

this is just the copy paste, but i have it exactly as you posted in ur answer

Nanopili Over a year ago

When i run it just says "invalid syntax"

Nanopili Over a year ago

File "test.py", line 1 syntax Error : invalid syntax

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