[PyQt] 'clicked' parameter in QPushButton's constructor

[Phil Thompson]

On 08/05/2019 09:07, Zhao Lee wrote:
> I can connect slot to QPushButton's clicked signal in its constructor 
> this way
> button = QPushButton("Click me",clicked=say_hello)
> It worked ! Test example as following:
> 
> 
> import sys
> from PyQt5.QtWidgets import *
> def say_hello():
>     print("Button clicked, Hello!")
> # Create the Qt Application
> app = QApplication(sys.argv)
> # Create a button, connect it and show it
> button = QPushButton("Click me",clicked=say_hello)
> # button = QToolButton("Click me", clicked=say_hello)
> # button.clicked.connect(say_hello)
> button.show()
> # Run the main Qt loop
> app.exec_()
> 
> 
> However , there seems no parameter named 'clicked' in QPushButton's
> constructor as described in the doc  , what's the working mechanism
> behind ? How do I know which parameters I could pass to the
> constructor?

https://www.riverbankcomputing.com/static/Docs/PyQt5/signals_slots.html#connecting-signals-using-keyword-arguments

Phil