fix: reshape read frames

Author: stanbot8

src/nd2/_nd2file.py

@@ -1251,8 +1251,7 @@ def read_frame(self, frame_index: SupportsInt) -> np.ndarray:
 
         !!! Tip "new in version 0.8.0"
         """
-        frame = self._rdr.read_frame(int(frame_index))
-        frame.shape = self._raw_frame_shape
+        frame = self._rdr.read_frame(int(frame_index)).reshape(self._raw_frame_shape)
         return frame.transpose((2, 0, 1, 3)).squeeze()
 
     @cached_property

tests/test_reader.py

@@ -14,10 +14,13 @@
 DATA = Path(__file__).parent / "data"
 
 
+@pytest.mark.filterwarnings(
+    "error:Setting the shape on a NumPy array has been deprecated:DeprecationWarning"
+)
 def test_read_safety(new_nd2: Path):
     with ND2File(new_nd2) as nd:
         for i in range(nd._frame_count):
-            nd._rdr.read_frame(i)
+            nd.read_frame(i)
 
 
 def test_position(new_nd2: Path):