Fails on memoryviews

[mrocklin]

The current implementation treats memoryview objects as strings. This both fails in Python 3 because the Pickler.save_string method does not exist (see Pickler.save_bytes instead), and because memoryviews are significantly more complex than their Python buffer cousins.

[jakirkham]

This seems to work today. Admittedly I'm testing with Python 3.8, which may make some difference.

In [1]: import cloudpickle

In [2]: m = memoryview(b"abc")

In [3]: cloudpickle.loads(cloudpickle.dumps(m))
Out[3]: b'abc'