Pi py - simple pi calculation in python

pi.py

#! /usr/bin/env python
__author__ = "dylnmc"

def main():
    from decimal import Decimal, getcontext
    from os import nice
    
    getcontext().prec = 100

    two = Decimal("2.0")
    p = two # product
    n = two # numerator
    d = Decimal("3.0") # denominator
    
    count = 0

    try:
        while True:
            p *= n / d

            if count % 2 == 0:
                n += two
            else:
                d += two

            count += 1
            
            if count % 1000 == 0:
                print "\x1b[0;0Hpi: ", p * two
            
    except (KeyboardInterrupt, SystemExit, EOFError):
        print "\nThat's enough pi for now!"
        print "loops:", count
        raise SystemExit

if __name__ == "__main__":
    print "\x1bc\x1b[?25l"
    try:
        main()
    except SystemExit:
        pass
    finally:
        print "\x1b[?25h"