x04ty29er

def reverse(num):
    temp = num
    rev_num = 0
    while temp > 0:
        rev_num *= 10
        rev_num += temp%10
        temp /= 10
    return rev_num

def main():
    number = -1
    while number<0:
        number = input('Enter a number: ')
    print 'Reverse Number: %d' % reverse(number)
main()