سير العمل البرمجي · مسافة هامنغ بين البايتات

def bit_distance(left, right):
    if type(left) is not bytes or type(right) is not bytes:
        raise ValueError("byte strings required")
    if len(left) != len(right): raise ValueError("equal lengths required")
    return sum((a ^ b).bit_count() for a, b in zip(left, right))