What would be the most performance efficient way of checking if a bytes is all zeros? Currently its `key == b'\x00' * len(key)` however, because its Python 2/3 compatible:
sum(key) == 0 is invalid key == bytes(len(key)) is invalid I already considered precomputing the rhs value. Length of key is unknown, could be few bytes, could be megabytes. -- ~ Arkadiusz Bulski -- https://mail.python.org/mailman/listinfo/python-list
