PySide, Connecting PushButton error

Question

I am trying to make a simple test application in PySide and I am really not understanding what I am missing. Here's the code so far:

    import sys
from PySide import QtCore, QtGui

class IPTest(QtGui.QMainWindow):
    def __init__(self):
        super(BartonTest, self).__init__()
        self.initUI()

    def initUI(self):
        lblAddress = QtGui.QLabel("IP Address", self)
        lineAddress = QtGui.QLineEdit(self)
        lblPort = QtGui.QLabel("Port Number", self)
        linePort = QtGui.QLineEdit(self)
        btnSend = QtGui.QPushButton("Send", self)
        btnReceive = QtGui.QPushButton("Receive", self)

        lblAddress.move(30, 20)
        lblPort.move(30, 60)
        lineAddress.move(130, 20)
        linePort.move(130, 60)
        btnSend.move(30, 100)
        btnReceive.move(130, 100)




        self.setGeometry(200, 200, 275, 150)
        self.setWindowTitle('Send/Receive TCP Test Program')
        self.show()

    def sendData(self):
        fileName, _ = QtGui.QFileDialog.getOPenFileName(self, 'Open CNC Program')
        self.data = open(fileName, 'r')



def main():
    app = QtGui.QApplication(sys.argv)
    bt = IPTest()
    sys.exit(app.exec_())

if __name__ == '__main__':
    main()

Now what I want to do is just connect an event to the Pushbutton. Qt's documentation tells me all I need to do is this:

btnSend.clicked.connect(self.sendData)

PyCharm says it cannot find the reference in clicked and the exception I get is

TypeError: native Qt signal is not callable

I am pretty (easily) stumped.

Answer 1

The following works correctly for me:

import sys
from PySide import QtCore, QtGui

class IPTest(QtGui.QMainWindow):
    def __init__(self):
        super(IPTest, self).__init__()
        self.initUI()

    def initUI(self):
        lblAddress = QtGui.QLabel("IP Address", self)
        lineAddress = QtGui.QLineEdit(self)
        lblPort = QtGui.QLabel("Port Number", self)
        linePort = QtGui.QLineEdit(self)
        btnSend = QtGui.QPushButton("Send", self)
        btnReceive = QtGui.QPushButton("Receive", self)

        lblAddress.move(30, 20)
        lblPort.move(30, 60)
        lineAddress.move(130, 20)
        linePort.move(130, 60)
        btnSend.move(30, 100)
        btnReceive.move(130, 100)

        btnSend.clicked.connect(self.sendData)
        self.setGeometry(200, 200, 275, 150)
        self.setWindowTitle('Send/Receive TCP Test Program')
        self.show()

    def sendData(self):

        fileName, _ = QtGui.QFileDialog.getOpenFileName(self, 'Open CNC Program')
        if len(fileName) > 0:
            self.data = open(fileName, 'r')