Class MemviewBytesIO

Lib/test/test_io/test_textio.py:1429–1437

A BytesIO object whose read method returns memoryviews rather than bytes

class MemviewBytesIO(io.BytesIO):
    '''A BytesIO object whose read method returns memoryviews
       rather than bytes'''

    def read1(self, len_):
        return _to_memoryview(super().read1(len_))

    def read(self, len_):
        return _to_memoryview(super().read(len_))

def _to_memoryview(buf):
    '''Convert bytes-object *buf* to a non-trivial memoryview'''