fix QApp utilization and minor style changes

pype/hosts/harmony/__init__.py

@@ -1,6 +1,5 @@
 import os
 import sys
-from uuid import uuid4
 
 from avalon import api, io, harmony
 from avalon.vendor import Qt
@@ -10,9 +9,6 @@ from pype import lib
 from pype.api import config
 
 
-signature = str(uuid4())
-
-
 def set_scene_settings(settings):
 
     signature = harmony.signature("set_scene_settings")
@@ -64,9 +60,12 @@ def get_asset_settings():
         "resolutionHeight": resolution_height
     }
 
-    harmony_config = config.get_presets()["harmony"]["general"]
+    try:
+        skip_resolution_check = \
+            config.get_presets()["harmony"]["general"]["skip_resolution_check"]
+    except KeyError:
+        skip_resolution_check = []
 
-    skip_resolution_check = harmony_config.get(["skip_resolution_check"], [])
     if os.getenv('AVALON_TASK') in skip_resolution_check:
         scene_data.pop("resolutionWidth")
         scene_data.pop("resolutionHeight")
@@ -86,21 +85,20 @@ def ensure_scene_settings():
             valid_settings[key] = value
 
     # Warn about missing attributes.
-    print("Starting new QApplication..")
-    app = Qt.QtWidgets.QApplication(sys.argv)
-
-    message_box = Qt.QtWidgets.QMessageBox()
-    message_box.setIcon(Qt.QtWidgets.QMessageBox.Warning)
-    msg = "Missing attributes:"
     if invalid_settings:
+        print("Starting new QApplication..")
+        app = Qt.QtWidgets.QApplication.instance()
+        if not app:
+            app = Qt.QtWidgets.QApplication(sys.argv)
+
+        message_box = Qt.QtWidgets.QMessageBox()
+        message_box.setIcon(Qt.QtWidgets.QMessageBox.Warning)
+        msg = "Missing attributes:"
         for item in invalid_settings:
             msg += f"\n{item}"
         message_box.setText(msg)
         message_box.exec_()
 
-    # Garbage collect QApplication.
-    del app
-
     set_scene_settings(valid_settings)
 
 

pype/plugins/harmony/load/load_background.py

@@ -1,11 +1,9 @@
 import os
-import uuid
-
-import clique
+import json
 
 from avalon import api, harmony
 import pype.lib
-import json
+
 
 copy_files = """function copyFile(srcFilename, dstFilename)
 {
@@ -256,7 +254,9 @@ class BackgroundLoader(api.Loader):
         container_nodes = []
 
         for layer in sorted(layers):
-            file_to_import = [os.path.join(bg_folder, layer).replace("\\", "/")]
+            file_to_import = [
+                os.path.join(bg_folder, layer).replace("\\", "/")
+            ]
 
             read_node = harmony.send(
                 {
@@ -301,8 +301,10 @@ class BackgroundLoader(api.Loader):
         print(container)
 
         for layer in sorted(layers):
-            file_to_import = [os.path.join(bg_folder, layer).replace("\\", "/")]
-            print(20*"#")
+            file_to_import = [
+                os.path.join(bg_folder, layer).replace("\\", "/")
+            ]
+            print(20 * "#")
             print(f"FILE TO REPLACE: {file_to_import}")
             print(f"LAYER: {layer}")
             node = harmony.find_node_by_name(layer, "READ")

pype/plugins/harmony/publish/extract_render.py

@@ -91,7 +91,7 @@ class ExtractRender(pyblish.api.InstancePlugin):
         if len(collections) > 1:
             for col in collections:
                 if len(list(col)) > 1:
-                     collection = col
+                    collection = col
         else:
             collection = collections[0]