Get the square root of a number example in Python!

sqrt.py

#!/usr/bin/env python
""" !- Square Root Example in Python -- By: @BlackVikingPro -! """

import sys

# Based on JavaScript code from https://gist.github.com/joelpt/3824024
def squirt(n, g=False):
        if (g == False):
                g = n / 2.0;
                pass

        d = n / g;
        ng = (d + g) / 2.0;

        if (g == ng):
                return g

        return squirt(n, ng);
        pass

if __name__ == '__main__':
        try:
                print squirt(int(sys.argv[1]), int(sys.argv[2]))
                pass
        except IndexError:
                if (len(sys.argv) == 2):
                        print squirt(int(sys.argv[1]), False)
                        sys.exit()
                        pass
                print "Please define something to square root."
                print "Example: ./sqrt.py 81"
                pass
        pass