How Can I Pass Extra Arguments to Qt Slots in Python?

Passing Extra Arguments through Qt's Slots

Passing variables to slots through signals can be useful for displaying specific text or data. In the given Python code, the goal is to pass the variable DiffP from the searchfile function to the input slot. Here are two ways to achieve this:

1. Using Lambda Functions

Lambda functions allow you to pass additional arguments to a slot:

self.buttonGroup.buttonClicked['int'].connect(lambda i: self.input(i, "text"))

This lambda function passes the button ID (i) as the first argument and the additional argument "text" as the second argument to the input slot.

2. Using functools.partial

The functools.partial function can also be used to bind extra arguments to a slot:

from functools import partial

...
self.buttonGroup.buttonClicked['int'].connect(partial(self.input, "text"))

This approach binds the "text" argument to the first parameter of the input slot, allowing the button ID to be passed as the second parameter.

Either method allows you to pass additional arguments to the input slot, enabling you to print the DiffP variable or any other desired text.

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