fix flake8 warnings

Author: chrisphilip322

mypy/build.py

@@ -902,7 +902,7 @@ def _find_module_non_stub_helper(
     ) -> Optional[str]:
         fscache = self.fscache
         for count in range(len(components)):
-            typed_file = os.path.join(pkg_dir, *components[:count+1], 'py.typed')
+            typed_file = os.path.join(pkg_dir, *components[:count + 1], 'py.typed')
             if fscache.isfile(typed_file):
                 return os.path.join(pkg_dir, *components[:-1])
         return None
@@ -926,7 +926,6 @@ def _find_module(self, id: str, search_paths: SearchPaths,
         # Third-party stub/typed packages
         for pkg_dir in search_paths.package_path:
             stub_name = components[0] + '-stubs'
-            typed_file = os.path.join(pkg_dir, components[0], 'py.typed')
             stub_dir = os.path.join(pkg_dir, stub_name)
             if fscache.isdir(stub_dir):
                 stub_typed_file = os.path.join(stub_dir, 'py.typed')

mypy/test/testpep561.py

@@ -203,6 +203,7 @@ def test_typedpkg_editable(self) -> None:
                 venv_dir=venv_dir,
             )
 
+
 class TestPEP561Namespace(TestCase):
 
     @contextmanager
@@ -254,8 +255,14 @@ def setUp(self) -> None:
         self.tempfile = os.path.join(self.temp_file_dir.name, 'namespace_program.py')
         with open(self.tempfile, 'w+') as file:
             file.write(NAMESPACE_PROGRAM)
-        self.msg_bool_str = '{0}:8: error: Argument 1 to "nested_func" has incompatible type "bool"; expected "str"\n'.format(self.tempfile)
-        self.msg_int_bool = '{0}:9: error: Argument 1 to "namespace_func" has incompatible type "int"; expected "bool"\n'.format(self.tempfile)
+        self.msg_bool_str = (
+            '{0}:8: error: Argument 1 to "nested_func" has incompatible type "bool"; '
+            'expected "str"\n'.format(self.tempfile)
+        )
+        self.msg_int_bool = (
+            '{0}:9: error: Argument 1 to "namespace_func" has incompatible type "int"; '
+            'expected "bool"\n'.format(self.tempfile)
+        )
 
     def tearDown(self) -> None:
         self.temp_file_dir.cleanup()
@@ -268,7 +275,7 @@ def test_nested_and_namespace(self) -> None:
             check_mypy_run(
                 [self.tempfile],
                 python_executable,
-                expected_out=self.msg_bool_str+self.msg_int_bool,
+                expected_out=self.msg_bool_str + self.msg_int_bool,
                 venv_dir=venv_dir,
             )