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Starting PySide, trouble

 
0
 

i finally started having a look at gui yesterday, and tried to do some things with PySide, however i have the following problem;

Whats wrong with this code?

!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PySide.QtCore import *
from PySide.QtGui import *

class Form(QDialog):

def __init__(self, parent=None):
super(Form, self).__init__(parent)
# Create widgets
self.edit = QLineEdit("Write my name here")
self.button = QPushButton("Show Greetings") 
# Create layout and add widgets
layout = QVBoxLayout()
layout.addWidget(self.edit)
layout.addWidget(self.button)
# Set dialog layout
self.setLayout(layout)
# Add button signal to greetings slot
self.button.clicked.connect(self.greetin…
# Add button signal to exit slot
exit_button = QPushButton("Exit")
exit_button.clicked.connect(sys.exit)
# Greets the user
def greetings(self):
print ("Hello %s" % self.edit.text()) 


if __name__ == '__main__':
# Create the Qt Application
app = QApplication(sys.argv)
# Create and show the form
form = Form()
form.show()
# Run the main Qt loop
sys.exit(app.exec_())

p.s im only just started learning pyside, i dont know how to make a button to exit.

p.p.s i have been playing with python for a while now, and still dont think i know much at all, am i doing okay so far or am i really bad like i feel?!
also, i dont know if im going about this the best way, can someone give me some key progress goals to go by or something, so that i dont end up missing things or getting too far ahead too soon, for my own good.

 
0
 

You have to make sure your code blocks are indented properly.

Here is an example showing the proper indentations:

#!/usr/bin/python
# -*- coding: utf-8 -*-

# PySide is the official LGPL-licensed version of PyQT
# I downloaded and used the Windows self-extracting installer
# PySide-1.0.0qt472.win32-py2.7.exe
# from: http://developer.qt.nokia.com/wiki/PySide_Binaries_Windows
# tested with pyside472 and Python27
 
from PySide.QtCore import *
from PySide.QtGui import *
 
class MyFrame(QWidget):
    def __init__(self, parent=None):
        # create the frame/window (this will be instance self)
        QWidget.__init__(self, parent)
        # setGeometry(x_pos, y_pos, width, height)
        self.setGeometry(100, 150, 300, 50)
        self.setWindowTitle('button connected to a label')

        # create a button
        self.button = QPushButton("Click me")
        # when clicked connect button to method action()
        self.button.clicked.connect(self.action)

        # create 2 Qt labels
        self.label1 = QLabel()
        self.label2 = QLabel()

        # use grid layout to position the 3 widgets
        grid = QGridLayout()
        # addWidget(QWidget, row, column, rowSpan=1, columnSpan=1)
        grid.addWidget(self.button, 0, 0)
        grid.addWidget(self.label1, 1, 0)
        grid.addWidget(self.label2, 2, 0)

        self.setLayout(grid)
        
    def action(self):
        s = "You clicked the button!"
        self.label1.setText(s)
        # for optional color use HTML code
        html = "<font color=red>You clicked the button!</font>"
        self.label2.setText(html)
        # optional wave sound
        # sound file (.wav files only) should be in working folder
        # or give full file path 
        QSound.play("boing.wav")
 
# create the Qt Application
app = QApplication([])

frame = MyFrame()
frame.show()

# run the main Qt event loop
app.exec_()
 
0
 

You have to make sure your code blocks are indented properly.

Here is an example showing the proper indentations:

#!/usr/bin/python
# -*- coding: utf-8 -*-

# PySide is the official LGPL-licensed version of PyQT
# I downloaded and used the Windows self-extracting installer
# PySide-1.0.0qt472.win32-py2.7.exe
# from: http://developer.qt.nokia.com/wiki/PySide_Binaries_Windows
# tested with pyside472 and Python27
 
from PySide.QtCore import *
from PySide.QtGui import *
 
class MyFrame(QWidget):
    def __init__(self, parent=None):
        # create the frame/window (this will be instance self)
        QWidget.__init__(self, parent)
        # setGeometry(x_pos, y_pos, width, height)
        self.setGeometry(100, 150, 300, 50)
        self.setWindowTitle('button connected to a label')

        # create a button
        self.button = QPushButton("Click me")
        # when clicked connect button to method action()
        self.button.clicked.connect(self.action)

        # create 2 Qt labels
        self.label1 = QLabel()
        self.label2 = QLabel()

        # use grid layout to position the 3 widgets
        grid = QGridLayout()
        # addWidget(QWidget, row, column, rowSpan=1, columnSpan=1)
        grid.addWidget(self.button, 0, 0)
        grid.addWidget(self.label1, 1, 0)
        grid.addWidget(self.label2, 2, 0)

        self.setLayout(grid)
        
    def action(self):
        s = "You clicked the button!"
        self.label1.setText(s)
        # for optional color use HTML code
        html = "<font color=red>You clicked the button!</font>"
        self.label2.setText(html)
        # optional wave sound
        # sound file (.wav files only) should be in working folder
        # or give full file path 
        QSound.play("boing.wav")
 
# create the Qt Application
app = QApplication([])

frame = MyFrame()
frame.show()

# run the main Qt event loop
app.exec_()

sorry, i previously posted it on another forum but when i copied it, it lost the indentation. I double checked my indentation and this still doesn't work for me, thank you for your time though.

 
1
 

Like this with correct indentations.

I double checked my indentation and this still doesn't work for me,

Do not post that code dont work,python always give you Traceback.
Next time post code and Traceback,then is`t much eaiser to help.
Understanding Traceback is very important part of programming in python.
1 line you get syntax error because of missing #

Also code from HiHe works,so now you have a couple working example with pyside.

#!/usr/bin/python 
# -*- coding: utf-8 -*-

import sys
from PySide.QtCore import *
from PySide.QtGui import *

class Form(QDialog):
    def __init__(self, parent=None):
        super(Form, self).__init__(parent)
        # Create widgets
        self.edit = QLineEdit("Write my name here")
        self.button = QPushButton("Show Greetings")
        # Create layout and add widgets
        layout = QVBoxLayout()
        layout.addWidget(self.edit)
        layout.addWidget(self.button)
        # Set dialog layout
        self.setLayout(layout)
        # Add button signal to greetings slot
        self.button.clicked.connect(self.greetings)
        # Add button signal to exit slot
        exit_button = QPushButton("Exit")
        exit_button.clicked.connect(sys.exit)

    # Greets the user
    def greetings(self):
        print ("Hello %s" % self.edit.text())

if __name__ == '__main__':
    # Create the Qt Application
    app = QApplication([])
    # Create and show the form
    form = Form()
    form.show()
    # Run the main Qt loop
    sys.exit(app.exec_())
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