This ends being the code I can use to get it to work, seems clear and pythonic, open to opinion on that :-)
answer = input("\t >> ") if isinstance(int(answer), int) is True: raise ValueError("Ints aren't valid input") sys.exit() elif isinstance(answer, str) is True: print(v0 * t - 0.5 * g * t ** 2) else: print("Ok please ammend your entries") Cheers Sayth -- https://mail.python.org/mailman/listinfo/python-list