Hello!
How do you name your variables? Is there a standard?
I used to name my variables something like "firstNumber = 5" and constants like "MAX_SPEED = 200".
The problem I noticed is that when I look for those variables they are hard to spot on sight.
As such, I decided to write my next programs using notations like "number_of_items = 25".
I feel like using "_" is much more readable that using "numberOfItems = 25" that can look similar to "typesOfItems = 10"

I have a question regarding Python class inheritance and naming conventions. When I derive a class from another and want to implement functionalities similar to those in the parent class, should I reuse the same function names or adhere strictly to PEP 8 guidelines?

For example, I'm developing a class that inherits from QComboBox in PyQt6. I want to add a function to include a new item. In the parent class, addItem is a public function. However, I can't exactly override this function, so I've ended up with the following code:

def addItem(self, text, userData=None, source="program") -> None: # noqa: N802
    """
    Add a single item to the combo box.
    Set the item's text, user data, and checkable properties.
    Depending on the data source, set it as (un)checked.
    Item is checked if it has been added by user, unchecked otherwise.
    """
    item = QStandardItem()
    item.setText(text)
    if userData is not None:
        item.setData(userData)
    item.setFlags(Qt.ItemFlag.ItemIsEnabled | Qt.ItemFlag.ItemIsUserCheckable)
    # Set the check state based on the source
    if source == "user":
        print("Source is user")
        item.setData(Qt.CheckState.Checked.value, Qt.ItemDataRole.CheckStateRole)
    else:
        print("Source is program")
        item.setData(Qt.CheckState.Unchecked.value, Qt.ItemDataRole.CheckStateRole)
    item.setData(source, Qt.ItemDataRole.UserRole + 1)
    self.model().appendRow(item)
    print(f"Added item: {text}, Source: {source}")
    self.updateLineEditField()