exercise.py

#!/usr/bin/env python

def checkfermat(a,b,c,n):
	for value in [a,b,c,n]:
		if value != int(value):	print(value, "is not a proper integer"); break
	if a**n + b**n == c**n:	print("This case proves Fermat's theorem wrong.")
	else:	print("The theory holds.")

def supplyargs(a,b,c,n):
	string, set = "null", [a,b,c,n]
	while string != "ready":
		print ("values are a:{0}, b:{1}, c:{2}, n:{3}".format(set[0], set[1], set[2], set[3]))
		string = raw_input("type a,b,c, or n followed by a dash and the number, or [Return]: ")
		if string == "":	checkfermat(a,b,c,n); break
		if int(string[0]) in set:	set[set.index(int(string[0]))] = int(string[2])	
		else:	pass
		print set
		
supplyargs(3,4,5,6)