Slightly API-breaking.. need to del everything

Author: franzpoeschel

src/binding/python/Series.cpp

@@ -647,5 +647,18 @@ users to overwrite default options, while keeping any other ones.
             py::arg("comm"),
             docs_merge_json)
 #endif
-        ;
+        .def("__del__", [](Series &s) {
+            try
+            {
+                s.close();
+            }
+            catch (std::exception const &e)
+            {
+                std::cerr << "Error during close: " << e.what() << std::endl;
+            }
+            catch (...)
+            {
+                std::cerr << "Unknown error during close." << std::endl;
+            }
+        });
 }

test/python/unittest/API/APITest.py

@@ -2026,6 +2026,9 @@ def makeAvailableChunksRoundTrip(self, ext):
         # Cleaner: write.close()
         # But let's keep this instance to test that that workflow stays
         # functional.
+        # Need to delete everything as garbage collection will keep `write`
+        # alive as long as E_x is around.
+        del E_x
         del write
 
         read = io.Series(