Potential fix for h5py deepcopy issues

pydata · Sep 16, 2020 · 3ca9f36 · 3ca9f36
1 parent 66ab0ae
commit 3ca9f36
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/xarray/core/indexing.py b/xarray/core/indexing.py
@@ -664,6 +664,12 @@ def __setitem__(self, key, value):
         self._ensure_copied()
         self.array[key] = value
 
+    def __deepcopy__(self, memo):
+        # CopyOnWriteArray is used to wrap backend array objects, which might
+        # point to files on disk, so we can't rely on the default deepcopy
+        # implementation. 
+        return type(self)(self.array)
+
 
 class MemoryCachedArray(ExplicitlyIndexedNDArrayMixin):
     __slots__ = ("array",)