mypy: update to 0.782 and enable it with Python 3.8 and 3.9 (onnx#3966)

* Upgrade to 0.782 and fix failures for Python 3.8 and 3.9

Signed-off-by: Chun-Wei Chen <[email protected]>

.azure-pipelines/Windows-CI.yml

@@ -8,6 +8,14 @@ jobs:
     vmImage: 'windows-2019'
   strategy:
     matrix:
+      py39:
+        python.version: '3.9'
+        onnx_ml: 0
+        onnx_verify_proto: 0
+      py38:
+        python.version: '3.8'
+        onnx_ml: 0
+        onnx_verify_proto: 0
       py37:
         python.version: '3.7'
         onnx_ml: 0

onnx/backend/test/report/coverage.py

@@ -159,6 +159,7 @@ def report_csv(self, all_ops: List[Text], passed: List[Optional[Text]], experime
         if os.path.isfile(nodes_path):
             with open(nodes_path, 'r') as nodes_file:
                 reader = csv.DictReader(nodes_file)
+                assert reader.fieldnames
                 frameworks = list(reader.fieldnames)
                 for row in reader:
                     op = row[str('Op')]

onnx/helper.py

@@ -826,10 +826,10 @@ def printable_node(node: NodeProto, prefix: Text = '', subgraphs: bool = False)
     printed_attrs = []
     for attr in node.attribute:
         if subgraphs:
-            printed_attr, gs = printable_attribute(attr, subgraphs)
-            assert isinstance(gs, list)
-            graphs.extend(gs)
-            printed_attrs.append(printed_attr)
+            printed_attr_subgraphs = printable_attribute(attr, subgraphs)
+            assert isinstance(printed_attr_subgraphs[1], list)
+            graphs.extend(printed_attr_subgraphs[1])
+            printed_attrs.append(printed_attr_subgraphs[0])
         else:
             printed = printable_attribute(attr)
             assert isinstance(printed, Text)
@@ -894,10 +894,10 @@ def printable_graph(graph: GraphProto, prefix: Text = '') -> Text:
     graphs: List[GraphProto] = []
     # body
     for node in graph.node:
-        pn, gs = printable_node(node, indent, subgraphs=True)
-        assert isinstance(gs, list)
-        content.append(pn)
-        graphs.extend(gs)
+        contents_subgraphs = printable_node(node, indent, subgraphs=True)
+        assert isinstance(contents_subgraphs[1], list)
+        content.append(contents_subgraphs[0])
+        graphs.extend(contents_subgraphs[1])
     # tail
     tail = ['return']
     if len(graph.output):

setup.py

@@ -327,7 +327,7 @@ def run(self):
 tests_require.append('nbval')
 tests_require.append('tabulate')
 
-extras_require['mypy'] = ['mypy==0.760', 'types-protobuf==3.18.4']
+extras_require['mypy'] = ['mypy==0.782', 'types-protobuf==3.18.4']
 
 ################################################################################
 # Final