Fixed linting issues

- re-enabled lint checks

.github/workflows/packagingtest.yml

@@ -32,8 +32,8 @@ jobs:
     - name: Lint with flake8 and check black
       run: |
         pip install black flake8
-        # flake8 . --filename '*.py,*.pyx,*.pxd' --count --show-source --statistics --exclude benchmark,build,capnp/templates/module.pyx
+        flake8 . --filename '*.py,*.pyx,*.pxd' --count --show-source --statistics --exclude benchmark,build,capnp/templates/module.pyx
-        # flake8 . --count --show-source --statistics --exclude benchmark,build
+        flake8 . --count --show-source --statistics --exclude benchmark,build
         black . --check --diff --color
     - name: Packaging
       run: |

test/test_serialization.py

@@ -99,7 +99,7 @@ def test_roundtrip_bytes_buffer(all_types):
 
 def test_roundtrip_bytes_fail(all_types):
     with pytest.raises(TypeError):
-        with all_types.TestAllTypes.from_bytes(42) as msg:
+        with all_types.TestAllTypes.from_bytes(42) as _:
             pass
 
 
@@ -238,7 +238,9 @@ def test_from_bytes_traversal_limit(all_types):
             for i in range(0, size):
                 msg.structList[i].uInt8Field == 0
 
-    with all_types.TestAllTypes.from_bytes(data, traversal_limit_in_words=2 ** 62) as msg:
+    with all_types.TestAllTypes.from_bytes(
+        data, traversal_limit_in_words=2**62
+    ) as msg:
         for i in range(0, size):
             assert msg.structList[i].uInt8Field == 0