rom-changer

rom = {'I':1,'II':2,"III":3,"IV":4,"V":5,"VI":6,"VII":7,"VIII":8,"IX":9,"X":10}
num = ['0','I','II','III','IV','V','VI','VII','VIII','IX','X']


def is_int(x):
    """Test if x can be converted to an int."""
    try:
        int(x)
    except ValueError:
        return False
    else:
        return True

def let(a):
    if is_int(a) == True:
        b = int(a)
        print num[b]
    elif type(a) == str:
        print rom[a]
    else:
        print "Out of Range, try again"

batman = True
while batman == True:
    var1 = raw_input("Gimmie a number ")
    let(var1)