# Except block catches ValueErrors caused by non-numerical input
def catch_error():
    while True:
        try:
            x = int(raw_input("Input a number: "))
            print "You input the number", x

        except ValueError:
            print "You did not input a number"

# Raise Error Example
def raise_error():
    while True:
        try:
            x = raw_input("Type 'x' to crash the program: ")
            if x == 'x':
                raise RuntimeError
            print "You did not crash the program"