Format files with black

- Format all files with black
- Update tox.ini flake8 arguments to be compatible
- Add black to requirements-extra.txt
- Reduce ignored flake8 rules and fix a few violations

qt/details_dialog.py

@@ -1,9 +1,9 @@
 # Created By: Virgil Dupras
 # Created On: 2010-02-05
 # Copyright 2015 Hardcoded Software (http://www.hardcoded.net)
-# 
-# This software is licensed under the "GPLv3" License as described in the "LICENSE" file, 
-# which should be included with this package. The terms are also available at 
+#
+# This software is licensed under the "GPLv3" License as described in the "LICENSE" file,
+# which should be included with this package. The terms are also available at
 # http://www.gnu.org/licenses/gpl-3.0.html
 
 from PyQt5.QtCore import Qt
@@ -11,6 +11,7 @@ from PyQt5.QtWidgets import QDialog
 
 from .details_table import DetailsModel
 
+
 class DetailsDialog(QDialog):
     def __init__(self, parent, app, **kwargs):
         super().__init__(parent, Qt.Tool, **kwargs)
@@ -20,28 +21,27 @@ class DetailsDialog(QDialog):
         # To avoid saving uninitialized geometry on appWillSavePrefs, we track whether our dialog
         # has been shown. If it has, we know that our geometry should be saved.
         self._shown_once = False
-        self.app.prefs.restoreGeometry('DetailsWindowRect', self)
+        self.app.prefs.restoreGeometry("DetailsWindowRect", self)
         self.tableModel = DetailsModel(self.model)
         # tableView is defined in subclasses
         self.tableView.setModel(self.tableModel)
         self.model.view = self
-        
+
         self.app.willSavePrefs.connect(self.appWillSavePrefs)
-    
-    def _setupUi(self): # Virtual
+
+    def _setupUi(self):  # Virtual
         pass
-    
+
     def show(self):
         self._shown_once = True
         super().show()
 
-    #--- Events
+    # --- Events
     def appWillSavePrefs(self):
         if self._shown_once:
-            self.app.prefs.saveGeometry('DetailsWindowRect', self)
-    
-    #--- model --> view
+            self.app.prefs.saveGeometry("DetailsWindowRect", self)
+
+    # --- model --> view
     def refresh(self):
         self.tableModel.beginResetModel()
         self.tableModel.endResetModel()
-