PyQt5 GroupBox Layouts Feedback

Question

I will import given code for my main QMainWindow.(I only add import sys etc. to run it) Is there a more compact way to code this lines. Output is correct for my expectation.

from PyQt5.QtWidgets import *
import sys
class ButtonWidget(QWidget):
 def __init__(self):
 super(ButtonWidget, self).__init__()
 # Function
 button1 = QRadioButton("Sinus")
 button2 = QRadioButton("Cosines")
 # Color
 button3 = QRadioButton("Red")
 button4 = QRadioButton("Green")
 # Line
 button5 = QRadioButton("Solid")
 button6 = QRadioButton("Dashed")
 # Left Group
 left_group = QGroupBox("Left Group")
 left_group_layout = QVBoxLayout()
 left_group_layout.addWidget(button1)
 left_group_layout.addWidget(button2)
 left_group.setLayout(left_group_layout)
 # Middle Group
 middle_group = QGroupBox("Middle Group")
 middle_group_layout = QVBoxLayout()
 middle_group_layout.addWidget(button3)
 middle_group_layout.addWidget(button4)
 middle_group.setLayout(middle_group_layout)
 # Right Group
 right_group = QGroupBox("Right Group")
 right_group_layout = QVBoxLayout()
 right_group_layout.addWidget(button5)
 right_group_layout.addWidget(button6)
 right_group.setLayout(right_group_layout)
 # Main Group
 main_group = QGroupBox("Main Group")
 main_group_layout = QHBoxLayout()
 main_group_layout.addWidget(left_group)
 main_group_layout.addWidget(middle_group)
 main_group_layout.addWidget(right_group)
 main_group.setLayout(main_group_layout)
 # Widget
 main_widget = QWidget()
 main_widget_layout = QVBoxLayout()
 main_widget.setLayout(main_widget_layout)
 main_widget_layout.addWidget(main_group)
 # Layout Set
 self.setLayout(main_widget_layout)
 self.show()
if __name__ == "__main__":
 app = QApplication(sys.argv)
 ui = ButtonWidget()
 sys.exit(app.exec_())

Answer 1

Yes there is a solution. The obvious solution is of course to use loops. Here is my try using a composite dictionary. It is functionally equivalent to your code and will save you about a dozen lines but hopefully adds flexibility. This was a quick job, so maybe you can take it further.

from PyQt5.QtWidgets import *
import sys
class ButtonWidget(QWidget):
 def __init__(self):
 super(ButtonWidget, self).__init__()
 groups = {"Left Group": ("Sinus", "Cosines"),
 "Middle Group": ("Red", "Green"),
 "Right Group": ("Solid", "Dashed")
 }
 # Main Group
 main_group = QGroupBox("Main Group")
 main_group_layout = QHBoxLayout()
 # loop on group names
 for group, buttons in groups.items():
 group_box = QGroupBox(group)
 group_layout = QVBoxLayout()
 for button_text in buttons:
 group_layout.addWidget(QRadioButton(button_text))
 group_box.setLayout(group_layout)
 main_group_layout.addWidget(group_box)
 main_group.setLayout(main_group_layout)
 # Widget
 main_widget = QWidget()
 main_widget_layout = QVBoxLayout()
 main_widget.setLayout(main_widget_layout)
 main_widget_layout.addWidget(main_group)
 # Layout Set
 self.setLayout(main_widget_layout)
 self.show()
if __name__ == "__main__":
 app = QApplication(sys.argv)
 ui = ButtonWidget()
 sys.exit(app.exec_())

NB: you'll probably have to add names to the generated controls (the buttons at least).

PS: personally I use the QT designer to build forms unless I need a highly dynamic layout. Adding controls in code is tedious and less visual.

• Gokberk: Actually, I'm trying to create engineering calculation GUI for my job. I think, I can create basic one. However I also want to improve myself. I will use numpy etc. What do you suggest for not highly dynamic layout