fix bug which broke alignment

pydata · Sep 10, 2018 · 68f170c · 68f170c
1 parent 9c6397c
commit 68f170c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/xarray/core/coordinates.py b/xarray/core/coordinates.py
@@ -307,7 +307,7 @@ def __len__(self):
         return sum(self._is_index_variable(key) for key in self._sizes)
 
     def __contains__(self, key):
-        self._is_index_variable(key)
+        return self._is_index_variable(key)
 
     def __getitem__(self, key):
         if not self._is_index_variable(key):