def toHex(s):
    lst = []
    for ch in s:
        hv = hex(ord(ch)).replace('0x', '')
        if len(hv) == 1:
            hv = '0' + hv
        lst.append(hv)

    return reduce(lambda x, y: x + y, lst)


def list_to_hex(list):
    ret = []
    for element in list:
        ret.append(toHex(element))
    return ret


def checkfile(x):
    L = []
    while True:
        x = raw_input('Please write the file you want to comapre : ')
        if x == 'Escape':
            break
        fin = open(x, 'r')
        fin = fin.readlines()
        L.append(fin)
        # for i in L:
        #     list_to_hex(i)



    return L


print checkfile('a')