Convert numbers to a certain base

Code:
import sys



sys.setrecursionlimit(1500) #Windows has a recursion limit



def start(): # define our main function, asks for input, etc.

    num = int(raw_input('Please enter a non-negative integer between 2 and 9:')) #prompt for the number to convert

    if num < 2 or num >= 10 or str(num)[0] == "-": #makes sure it isnt below 2, above 9.9, and isn't negative

        print "You have entered an incorrect number"

        start() #recall our start function so they get returned to the beginning

    basenum = int(raw_input('What base shall I convert %i to?' %num)) #find the base to convert this number to

    findbase(basenum, num) #call the findbase function using the input provided







result = [] #we need to use a global list so our function doesn't keep redefining it as empty

def findbase(base, num): #this function will print the result

    global result #tell the program we are dealing with the global result variable, defined above

    if num == 0: #if our number is equal to 0, stop dividing it, print the result

        result.reverse #reverse the list first

        print result #self explanatory

    else:# if it isn't equal to 0

        result.append(num % base) #append the remainder of the number divided by the base to our list

        num /= base #divide the number by the base

        findbase(base, num) #recursion, call the function again except using the new num, after divided by the base



start() #call our main function, starting the program