Resolved last pylint warnings

Author: Dennis-van-Gils

demo_A_GUI_full.py

@@ -161,11 +161,14 @@ def __init__(
         # Right box
         p = {
             "alignment": QtCore.Qt.AlignmentFlag.AlignRight
-            | QtCore.Qt.AlignmentFlag.AlignVCenter
+            | QtCore.Qt.AlignmentFlag.AlignVCenter,
+            "parent": self,
         }
+
         self.qpbt_exit = QtWid.QPushButton("Exit")
         self.qpbt_exit.clicked.connect(self.close)
         self.qpbt_exit.setMinimumHeight(30)
+
         self.qlbl_GitHub = QtWid.QLabel(
             f'<a href="{__url__}">GitHub source</a>', **p
         )
@@ -175,7 +178,8 @@ def __init__(
         )
         self.qlbl_GitHub.setOpenExternalLinks(True)
 
-        vbox_right = QtWid.QVBoxLayout(spacing=4)
+        vbox_right = QtWid.QVBoxLayout()
+        vbox_right.setSpacing(4)
         vbox_right.addWidget(self.qpbt_exit, stretch=0)
         vbox_right.addStretch(1)
         vbox_right.addWidget(QtWid.QLabel(__author__, **p))
@@ -286,7 +290,7 @@ def __init__(
         self.plot_manager.add_autorange_buttons(linked_plots=self.plot)
         self.plot_manager.add_preset_buttons(
             linked_plots=self.plot,
-            linked_curves=self.history_chart_curve,
+            linked_curves=[self.history_chart_curve],
             presets=[
                 {
                     "button_label": "0.100",
@@ -309,7 +313,7 @@ def __init__(
             ],
         )
         self.plot_manager.add_clear_button(
-            linked_curves=self.history_chart_curve
+            linked_curves=[self.history_chart_curve]
         )
         self.plot_manager.perform_preset(1)
 
@@ -452,7 +456,7 @@ def DAQ_function() -> bool:
             ard.state.time, ard.state.reading_1
         )
 
-        # Add readings to the log
+        # Create and add readings to the log
         log.update()
 
         return True
@@ -520,13 +524,13 @@ def notify_connection_lost():
             "Lost connection to Arduino."
         )
         print(f"\nCRITICAL ERROR @ {str_msg}")
-        reply = QtWid.QMessageBox.warning(
-            window, "CRITICAL ERROR", str_msg, QtWid.QMessageBox.Ok
+        QtWid.QMessageBox.warning(
+            window,
+            "CRITICAL ERROR",
+            str_msg,
+            QtWid.QMessageBox.StandardButton.Ok,
         )
 
-        if reply == QtWid.QMessageBox.Ok:
-            pass  # Leave the GUI open for read-only inspection by the user
-
     # --------------------------------------------------------------------------
     #   Start the main GUI event loop
     # --------------------------------------------------------------------------

demo_C_singlethread_for_comparison.py

@@ -171,11 +171,14 @@ def __init__(
         # Right box
         p = {
             "alignment": QtCore.Qt.AlignmentFlag.AlignRight
-            | QtCore.Qt.AlignmentFlag.AlignVCenter
+            | QtCore.Qt.AlignmentFlag.AlignVCenter,
+            "parent": self,
         }
+
         self.qpbt_exit = QtWid.QPushButton("Exit")
         self.qpbt_exit.clicked.connect(self.close)
         self.qpbt_exit.setMinimumHeight(30)
+
         self.qlbl_GitHub = QtWid.QLabel(
             f'<a href="{__url__}">GitHub source</a>', **p
         )
@@ -185,7 +188,8 @@ def __init__(
         )
         self.qlbl_GitHub.setOpenExternalLinks(True)
 
-        vbox_right = QtWid.QVBoxLayout(spacing=4)
+        vbox_right = QtWid.QVBoxLayout()
+        vbox_right.setSpacing(4)
         vbox_right.addWidget(self.qpbt_exit, stretch=0)
         vbox_right.addStretch(1)
         vbox_right.addWidget(QtWid.QLabel(__author__, **p))
@@ -279,7 +283,7 @@ def __init__(
         self.plot_manager.add_autorange_buttons(linked_plots=self.plot)
         self.plot_manager.add_preset_buttons(
             linked_plots=self.plot,
-            linked_curves=self.history_chart_curve,
+            linked_curves=[self.history_chart_curve],
             presets=[
                 {
                     "button_label": "0.100",
@@ -302,7 +306,7 @@ def __init__(
             ],
         )
         self.plot_manager.add_clear_button(
-            linked_curves=self.history_chart_curve
+            linked_curves=[self.history_chart_curve]
         )
         self.plot_manager.perform_preset(1)
 
@@ -489,7 +493,7 @@ def DAQ_function():
             ard.state.time, ard.state.reading_1
         )
 
-        # Add readings to the log
+        # Create and add readings to the log
         log.update()
 
         # We update the GUI right now because this is a singlethread demo