Problem controlling a GPIO with Python

[eltuxumuxu]

I have the Raspberry Pi B with Raspbian installed.
Im trying to control the GPIO27 (number 13) with a script
The script on.py says:
import RPi.GPIO as GPIO
GPIO.setup(13, GPIO.OUT)
GPIO.output(13, True)
and off.py says:
import RPi.GPIO as GPIO
GPIO.setup(13, GPIO.OUT)
GPIO.output(13, False)
The problem is that the LED connected to the GPIO doesn't turn on.
However, if i follow the following commands, it turns on
root@raspberrypi:~# echo 27 > /sys/class/gpio/export
root@raspberrypi:~# echo out > /sys/class/gpio/gpio27/direction
root@raspberrypi:~# echo 1 > /sys/class/gpio/gpio27/value
I have no problem with python using others GPIOs, but i cant using this. What am i doing wrong?

Thanks

[vachhaninimiT]

Hi,
You code should be

import RPi.GPIO as GPIO

GPIO.setmode(GPIO.BOARD) #or you can use GPIO.setmode(GPIO.BCM)

#In board mode it will setup up pin 13 and in BCM mode it will setup GPIO13

GPIO.setup(13, GPIO.OUT)
GPIO.output(13, True)

[DirkS]

What am i doing wrong?

Above is correct, but to make it absolutely clear: RPi.GPIO defaults to mode GPIO.BCM.
So if you don't set it explicitly to GPIO.BOARD you should use the same number as you did in the echo commands (27).

Gr
Dirk.

[eltuxumuxu]

Thank you, there was two problems: first was that, i had to set the setmode, and the second one, i had installed RPi.GPIO 0.1.0, when i uninstalled it, it worked like a charm. Thank you again!!