Function gen

python/pyarrow/tests/test_cffi.py:515–522

()

    old_allocated = pa.total_allocated_bytes()

    def gen():
        if True:
            try:
                raise ValueError('foo')
            except ValueError as e:
                raise NotImplementedError('bar') from e
        else:
            yield from make_batches()

    original = pa.RecordBatchReader.from_batches(make_schema(), gen())
    original._export_to_c(ptr_stream)