Python code for Raspberry Pi to generate a square wave of 50% duty cycle on GPIO7 pin 26 of P1 with 1kHz frequency

sqr_1ch_1k_50p.py

#!/usr/bin/python
#######
# This program would generate PWM on GPIO 7 Pin 26 of P1
# with 50% Dutycyle at 1kHz
#######
import RPi.GPIO as GPIO
from time import sleep

GPIO.setmode(GPIO.BCM)
GPIO.setup(7,GPIO.OUT)
p=GPIO.PWM(7,1190)
p.start(50.0)
raw_input("Press Enter key to Stop 1kHz PWM @ 50% duty cycle")
GPIO.cleanup()