PySide Tools: Fix flake8 warnings

- Fix general flake8 warnings in pyside-tools.
- add F401 to .flake8 to ignore unused imports from __init__.py files
- add E402 from __init__.py to prevent errors related to partial
  initialization of modules.

Pick-to: 6.6 6.5
Change-Id: Ia848b08ff6f0d2808e04f6a83c46636e2d167c02
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/sources/pyside-tools/qml.py b/sources/pyside-tools/qml.py
index 61e0e8ff9..d76e5c5c9 100644
--- a/sources/pyside-tools/qml.py
+++ b/sources/pyside-tools/qml.py
@@ -215,7 +215,7 @@ if __name__ == "__main__":
     if apptype == "core":
         component = QQmlComponent(engine, qml_file)
         obj = component.create()
-        filtered_attributes = {k: v for k, v in vars(obj).items() if type(v) != SignalInstance}
+        filtered_attributes = {k: v for k, v in vars(obj).items() if type(v) is not SignalInstance}
         logging.info("qml: component object attributes are")
         pprint(filtered_attributes)
         del engine
@@ -227,7 +227,7 @@ if __name__ == "__main__":
         sys.exit(-1)
 
     qquick_view = False
-    if type(rootObjects[0]) != QQuickWindow and qquick_present:
+    if isinstance(rootObjects[0], QQuickWindow) and qquick_present:
         logging.info("qml: loading with QQuickView")
         viewer = QQuickView()
         viewer.setSource(qml_file)