Applying black formatting

- Fixing flake8 configuration to agree with black
- Adding black validation check to github actions

test/test_load.py

@@ -8,21 +8,21 @@ this_dir = os.path.dirname(__file__)
 
 @pytest.fixture
 def addressbook():
-    return capnp.load(os.path.join(this_dir, 'addressbook.capnp'))
+    return capnp.load(os.path.join(this_dir, "addressbook.capnp"))
 
 
 @pytest.fixture
 def foo():
-    return capnp.load(os.path.join(this_dir, 'foo.capnp'))
+    return capnp.load(os.path.join(this_dir, "foo.capnp"))
 
 
 @pytest.fixture
 def bar():
-    return capnp.load(os.path.join(this_dir, 'bar.capnp'))
+    return capnp.load(os.path.join(this_dir, "bar.capnp"))
 
 
 def test_basic_load():
-    capnp.load(os.path.join(this_dir, 'addressbook.capnp'))
+    capnp.load(os.path.join(this_dir, "addressbook.capnp"))
 
 
 def test_constants(addressbook):
@@ -40,25 +40,25 @@ def test_import(foo, bar):
     m2 = capnp._MallocMessageBuilder()
     bar = m2.init_root(bar.Bar)
 
-    foo.name = 'foo'
+    foo.name = "foo"
     bar.foo = foo
 
-    assert bar.foo.name == 'foo'
+    assert bar.foo.name == "foo"
 
 
 def test_failed_import():
     s = capnp.SchemaParser()
     s2 = capnp.SchemaParser()
 
-    foo = s.load(os.path.join(this_dir, 'foo.capnp'))
-    bar = s2.load(os.path.join(this_dir, 'bar.capnp'))
+    foo = s.load(os.path.join(this_dir, "foo.capnp"))
+    bar = s2.load(os.path.join(this_dir, "bar.capnp"))
 
     m = capnp._MallocMessageBuilder()
     foo = m.init_root(foo.Foo)
     m2 = capnp._MallocMessageBuilder()
     bar = m2.init_root(bar.Bar)
 
-    foo.name = 'foo'
+    foo.name = "foo"
 
     with pytest.raises(Exception):
         bar.foo = foo
@@ -86,6 +86,7 @@ def test_add_import_hook():
     capnp.cleanup_global_schema_parser()
 
     import addressbook_capnp
+
     addressbook_capnp.AddressBook.new_message()
 
 
@@ -98,6 +99,7 @@ def test_multiple_add_import_hook():
     capnp.cleanup_global_schema_parser()
 
     import addressbook_capnp
+
     addressbook_capnp.AddressBook.new_message()
 
 
@@ -105,9 +107,9 @@ def test_remove_import_hook():
     capnp.add_import_hook([this_dir])
     capnp.remove_import_hook()
 
-    if 'addressbook_capnp' in sys.modules:
+    if "addressbook_capnp" in sys.modules:
         # hack to deal with it being imported already
-        del sys.modules['addressbook_capnp']
+        del sys.modules["addressbook_capnp"]
 
     with pytest.raises(ImportError):
         import addressbook_capnp  # noqa: F401