swap.py

def swap(a, b):
	return b, a
# = = = = = = = = = = = = = = = = = = = = = = = = = = =
# mian function
# = = = = = = = = = = = = = = = = = = = = = = = = = = =
if __name__ == '__main__':
	a = 10
	b = 15

	print "before swap a = " + str(a) + " ,b = " + str(b)
	a, b = swap(a, b)
	print "after swap a = " + str(a) + " ,b = " + str(b)