How to bind objects in PyQt?

Question

Python

Hello!
I am developing a form using PyQt. I don't quite understand how the objects are connected to each other.
Example: I have a QLineEdit and a QCheckBox. When the status changes, the QCheckBox signals this and the QLineEdit becomes available or unavailable for input.
Right now I'm using the following structure:

self.MyChkbox.stateChanged.connect(
    lambda state: self.MyLineEdit.setReadOnly(
        True if state == 2 else False
    )
)

But it’s impossible, for example, passing through all the checkboxes in a loop in order to legalize each with its own lineEdit, and to connect a hundred checkboxes, I will have to repeat this construction a hundred times, each time explicitly pointing to a new field.
In my view, it should be possible to somehow group widgets so that each checkbox can be instructed to change the state of its widget.
Question: how can I avoid explicitly specifying names or references to objects in the code? Is there some kind of grouping of widgets that implements their connection for me? What to read?

Answer 1

class MyCheckBox(QCheckBox):
    def __init__(self, target_edit:QLineEdit, parent):
        super().__init__(parent)
        self._target_edit = target_edit
        self.stateChanged.connect(self._stateChanged_slot)

    def _stateChanged_slot(self):
        self._target_edit.setReadOnly(not self._target_edit.isReadOnly())

Answer 2

So far, we managed to solve it by assigning a custom attribute (property) in each checkbox. The attribute points to the name of the field that belongs to this checkbox.
When constructing the form, I set the attributes like this:
Then, when initializing the window, I do this:

for checkbox in self.findChildren(QCheckBox): # Для всех чекбоксов формы
    if checkbox.property('field_name'): # Если чекбокс имеет свойство 'field_name'
        checkbox.stateChanged.connect( # Законнектить смену статуса чекбокса к функции
            # Функция поиска поля по имени объекта, содержащегося в свойстве отправителя (чекбокса)
            lambda state : self.findChild(QLineEdit, self.sender().property('field_name')).setReadOnly( 
                True if state == 2 else False # Выставить соответствующий статус доступности для ввода
            )
        )

I will be very glad to any other suggestions. Especially the link to the reading.