Raspberry 2 - part 3- blink leds with Python

Hi,
this tutorial today, will show how to use the raspberry and the linux installed, to control the GPIO with a simple Python script.

So the ideia, is to use the GPIO 17 and 18, to swith on and off, 2x LED´s.
Each LEd is connected to a GPIO with a serial resistance (1k) to limit the output current.
After a resistance is the LED.

Before connect the GPI check the pin on the raspberry site.
The GPIO of my raspberry is:

The schematic for the connections shall be:

The code of script is:

'''
Created on 23/01/2016

@author: tecbea
'''
# import gpio
import RPi.GPIO as GPIO
# import time 
import time


def _ledLoop (io,num,sleep):
    for num in range(1,num):
        print "io %d on" % io
        GPIO.output(io,GPIO.HIGH)
        time.sleep(sleep)
        print "io %d off" % io
        GPIO.output(io,GPIO.LOW)
        time.sleep(sleep)

def main():
    print ("==init==")

    # set mode on gpio 18
    GPIO.setmode(GPIO.BCM)
    GPIO.setwarnings(False)
    # output mode
    GPIO.setup(17,GPIO.OUT)
    GPIO.setup(18,GPIO.OUT)
    
    _ledLoop(17,10,0.5);
    _ledLoop(18,10,0.5);
    _ledLoop(17,20,0.1);   
    _ledLoop(18,20,0.1);   

# ###############################
if __name__ == "__main__":
    main()

best