#!/usr/bin/python

##########################
#Number base changer 2.0 #
#by sensei               #
#Thx to Windhack         #
##########################
def hexadecimal(num):
    return hex(num)

def hextodec(num):
    return int(hex(num), 16)

def octal(num):
    return oct(num)

def octtodec(num):
    return int(oct(num), 8)

def binary(num):
    return bin(num)

def bintodec(num):
    return int(bin(num), 2)

while True:

    try:

        num=int(input('Type the number to convert: '))

        print '''Welcome to Number base changer
                 Please, chose an option:
                 1. Convert to hexadecimal
                 2. Convert to octal
                 3. Convert to binary
                 4. Convert from hexadecimal
                 5. Convert from octal
                 6. Convert from binary
                 7. Exit
                 '''

        a=raw_input('Please, chose your option: ')

        if a=='1':
            print 'your num in hexadecimal is: %s' %hexadecimal(num)

        elif a=='2':
            print 'your num in octal is: %s' %octal(num)

        elif a=='3':
            print 'your num in binary is: %s' %binary(num)

        elif a=='4':
            print 'your num in decimal is: %s' %hextodec(num)

        elif a=='5':
            print 'your num in decimal is: %s' %octtodec(num)

        elif a=='6':
            print 'your num in decimal is: %s' %bintodec(num)

        elif a=='7':
            break
            exit()
        
        else:
            print 'you must type a valid option'

    except:
        print 'Warning, an error has ocurred'