Merge pull request #163 from mfastudillo/fix_iotable_backend

fix iterator over exchanges

Author: BenPortner

bw2data/backends/iotable/proxies.py

@@ -228,7 +228,7 @@ def _raw_technosphere_iterator(self, negative=True):
                     yield (row, col, value)
 
     def _raw_biosphere_iterator(self):
-        bm = lambda x: any(obj["matrix"] == "biosphere_matrix" for obj in x.values())
+        bm = lambda x: any(obj.get("matrix") == "biosphere_matrix" for obj in x.values())
         for resource in filter(bm, self.resources):
             for (row, col), value in zip(
                 resource["indices"]["array"], resource["data"]["array"]

tests/iotable.py

@@ -489,3 +489,10 @@ def test_iotable_filtered_datapackage(iotable_fixture):
     IOTableExchanges(datapackage=dp, target=get_node(code="b"))
     with pytest.raises(InvalidDatapackage):
         IOTableExchanges(datapackage=dp, target=get_node(code="a"))
+
+
+def test_iotable_readonlyexchange_iterator(iotable_fixture):
+
+    act = get_activity(('cat','b'))
+
+    list(act.exchanges())