one_is_more_encode.py

def chunk_bytes(value, bit_length):
    """
    Chunk value into bytes of bit_length
    """
    for _ in range(0, value.bit_length(), bit_length):
        yield value & ((1 << bit_length) - 1)
        value >>= bit_length


def one_is_more_encode(value):
    """
    Encode value into bytes with 7 bits of payload and 1 bit
    which indicates the continuation.
    """
    result = bytearray()
    first = True
    for byte in chunk_bytes(value, 7):
        if first:
            first = False
        else:
            result[-1] ^= 1 << 7
        result.append(byte)
    return bytes(result)