Fix recently added JF4M format class. Avoids matching to dataset h5 f…

…iles
cctbx · Mar 11, 2024 · 89a4d36 · 89a4d36
1 parent 1da5d45
commit 89a4d36
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diff --git a/newsfragments/XXX.misc b/newsfragments/XXX.misc
@@ -0,0 +1 @@
+Fix recently added ESRF Jungfrau4M format class
diff --git a/src/dxtbx/format/FormatHDF5ESRFJungfrau4M.py b/src/dxtbx/format/FormatHDF5ESRFJungfrau4M.py
@@ -22,6 +22,10 @@ def understand(image_file):
             if len(h5_handle) != 1:
                 return False
             key = list(h5_handle.keys())[0]
+            if not isinstance(
+                h5_handle[key], h5py.Group
+            ):  # check we're not trying to read a 'dataset' object
+                return False
             if "instrument" not in h5_handle[key]:
                 return False
             # instrument name is of form jungfrau4m_rr[X]_smx where X is empty, 4 or another number