Pi calculator. It's accurate for 5 digits after decimal.

pi.py

def main():
	
	print "Calculating pi. Calm down,bro!"
	acc = 0.0
	for i in range(1,1000001,4):
		acc += 4/float(i)
		acc -= 4/float(i+2)
		print i
		
	print "The answer is {0} , brother from another mother!".format(acc)
	
	return 0

if __name__ == '__main__':
	main()