How in PyQt connect button to a function with a specific parameter?

Question

The idea is that when button is pressed, I need to start a function with the parameter that is that button's text.

# -*- coding: utf-8 -*-
import ftplib 
from PyQt4 import QtGui, QtCore
import sys
import socket

app = QtGui.QApplication(sys.argv)
window = QtGui.QWidget()

List = ['one', 'two', 'free']

layer = QtGui.QVBoxLayout()
window.setLayout(layer)

def btn_clicked(btn):
    print 'button with text <%s> clicked' %(btn)

for i in List:
    button = QtGui.QPushButton(i)
    layer.addWidget(button)
    QtCore.QObject.connect(button, QtCore.SIGNAL('clicked()'),  btn_clicked(button.text())) # <--- the problem is here 

window.show()
sys.exit(app.exec_())

ekhumoro · Accepted Answer · 2016-10-29 18:55:38Z

1

Connect the buttons like this:

for i in List:
    button = QtGui.QPushButton(i)
    layer.addWidget(button)
    button.clicked.connect(lambda arg, text=i: myfunc(text))

answered Oct 29, 2016 at 18:55

ekhumoro

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Comments

Achayan · Accepted Answer · 2016-10-30 03:30:31Z

0

I prefer partial over lambda and I think that will be easy to use.

from functools import partial
...
for i in List:
    button = QtGui.QPushButton(i)
    layer.addWidget(button)
    button.clicked.connect(partial(btn_clicked, str(button.text())))

answered Oct 30, 2016 at 3:30

Achayan

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