print_binary.py

def print_binary(data, prnt=True):

    def print_line(offset, dec, char, prnt=True):
        if len(dec) == 0:
            return

        line_offset = '%08X: ' % offset

        line_dec = ''
        line_char = ''
        for d in dec:
            line_dec += '%02X ' % d

        for c in char:
            line_char += '%c' % c

        pad = 16 - len(dec)

        for _ in range(pad):
            line_dec += '   '

        line_total = line_offset + line_dec + '  ' + line_char

        if offset == 0 and prnt:
            print('-' * len(line_total))

        if prnt:
            print(line_total)
            return

        return line_total

    char = []
    dec = []
    result = []
    offset = 0

    i = 0
    for c in data:
        d = ord(c)
        dec.append(d)
        if d >= 32 and d < 127:
            char.append(c)
        else:
            char.append('.')

        i += 1
        if i == 16:
            result.append(print_line(offset, dec, char, prnt=prnt))
            offset += 16
            i = 0
            char = []
            dec = []

    # print last line
    last_line = print_line(offset, dec, char, prnt=prnt)
    if last_line:
        result.append(last_line)

    if prnt:
        return

    return result