Python Programming Tutorials

Tutorial PyQt5

Hey harisson, any idea to do an pyqt5 tut? It seems that the module is changed quit a bit in compares pyqt4. The import statements are quit different to begin with.
I try to update the code for all the lessons i'm watching your tuts now and try to port it to pyqt5

for example intro lesson PyQt5 would be

import sys
from PyQt5.QtWidgets import QApplication, QWidget

app = QApplication(sys.argv)

window = QWidget()
window.setGeometry(50, 50, 500, 300)
window.setWindowTitle('pyQt Tuts')

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

You must be logged in to post. Please login or register an account.

if you are ok with it, by time i try to port your examples to pyqt5 standards ?

-kenwaldek 8 years ago

Last edited 8 years ago

You must be logged in to post. Please login or register an account.

I plan to eventually do a pyqt5 tutorial, but no idea when. You're free to make the updates. If you want to share with others, post them to the tutorial videos, I'll happily pin them to the top if I see them.

-Harrison 8 years ago

You must be logged in to post. Please login or register an account.

Today i did from 1 - 9 had some problems but everything works, the problem is i can't post it in youtube 'code is to long' to paste and save. It chopped of the .tail of the code
If you want i post it here, the first lesson i posted the rest i didn't.
I will post it on a branch on github when all lessons are done so you can reach them if you want.

-kenwaldek 8 years ago

Last edited 8 years ago

You must be logged in to post. Please login or register an account.

I have a problem with lesson 14 opening an file with mac OS X could someone try to open a file with the code below. you see the error message in comments and the code is marked with ##todo ##end

#! /usr/bin/env python3
#  -*- coding:utf-8 -*-
###############################################################
# kenwaldek                           GPL-license

# Title: PyQt5 lesson 14              Version: 1.0
# Date: 09-01-17                      Language: python3
# Description: pyqt5 gui and opening files
# pythonprogramming.net from PyQt4 to PyQt5
###############################################################
# do something
import sys
from PyQt5.QtCore import QCoreApplication, Qt
from PyQt5.QtGui import QIcon, QColor
from PyQt5.QtWidgets import QApplication, QWidget, QMainWindow, QPushButton, QAction, QMessageBox
from PyQt5.QtWidgets import QCalendarWidget, QFontDialog, QColorDialog, QTextEdit, QFileDialog
from PyQt5.QtWidgets import QCheckBox, QProgressBar, QComboBox, QLabel, QStyleFactory


class window(QMainWindow):

    def __init__(self):
        super(window, self).__init__()
        self.setGeometry(50, 50, 800, 500)
        self.setWindowTitle('pyqt5 Tut')
        # self.setWindowIcon(QIcon('pic.png'))

        extractAction = QAction('&Get to the choppah', self)
        extractAction.setShortcut('Ctrl+Q')
        extractAction.setStatusTip('leave the app')
        extractAction.triggered.connect(self.close_application)

        openEditor = QAction('&Editor', self)
        openEditor.setShortcut('Ctrl+E')
        openEditor.setStatusTip('Open Editor')
        openEditor.triggered.connect(self.editor)

        openFile = QAction('&Open File', self)
        openFile.setShortcut('Ctrl+O')
        openFile.setStatusTip('Open File')
        openFile.triggered.connect(self.file_open)

        self.statusBar()

        mainMenu = self.menuBar()
        fileMenu = mainMenu.addMenu('&File')
        fileMenu.addAction(extractAction)

        fileMenu.addAction(openFile)

        editorMenu = mainMenu.addMenu('&Editor')
        editorMenu.addAction(openEditor)

        extractAction = QAction(QIcon('pic.png'), 'flee the scene', self)
        extractAction.triggered.connect(self.close_application)
        self.toolBar = self.addToolBar('extraction')
        self.toolBar.addAction(extractAction)

        fontChoice = QAction('Font', self)
        fontChoice.triggered.connect(self.font_choice)
        # self.toolBar = self.addToolBar('Font')
        self.toolBar.addAction(fontChoice)

        cal = QCalendarWidget(self)
        cal.move(500, 200)
        cal.resize(200, 200)

        self.home()

    def editor(self):
        self.textEdit = QTextEdit()
        self.setCentralWidget(self.textEdit)

##Todo looking what the error is can't open an file program ends in osx
##  file = open(name, 'r')
##  TypeError: expected str, bytes or os.PathLike object, not tuple
    def file_open(self):
        name = QFileDialog.getOpenFileName(self, 'Open File')
        file = open(name, 'r')
        
        self.editor()
        
        with file:
            text = file.read()
            self.textEdit.setText(text)

##End of code problem
    def color_picker(self):
        color = QColorDialog.getColor()
        self.styleChoice.setStyleSheet('QWidget{background-color: %s}' % color.name())

    def font_choice(self):
        font, valid = QFontDialog.getFont()
        if valid:
            self.styleChoice.setFont(font)

    def home(self):
        btn = QPushButton('quit', self)
        btn.clicked.connect(self.close_application)
        btn.resize(btn.sizeHint())
        btn.move(0, 100)

        checkBox = QCheckBox('Enlarge window', self)
        # checkBox.toggle()  # if you want to be checked in in the begin
        checkBox.move(0, 50)
        checkBox.stateChanged.connect(self.enlarge_window)

        self.progress = QProgressBar(self)
        self.progress.setGeometry(200, 80, 250, 20)

        self.btn = QPushButton('download', self)
        self.btn.move(200, 120)
        self.btn.clicked.connect(self.download)

        self.styleChoice = QLabel('Windows', self)
        comboBox = QComboBox(self)
        comboBox.addItem('motif')
        comboBox.addItem('Windows')
        comboBox.addItem('cde')
        comboBox.addItem('Plastique')
        comboBox.addItem('Cleanlooks')
        comboBox.addItem('windowsvista')

        comboBox.move(25, 250)
        self.styleChoice.move(25, 150)
        comboBox.activated[str].connect(self.style_choice)

        color = QColor(0,0,0)
        fontColer = QAction('font bg color', self)
        fontColer.triggered.connect(self.color_picker)
        self.toolBar.addAction(fontColer)

        self.show()

    def style_choice(self, text):
        self.styleChoice.setText(text)
        QApplication.setStyle(QStyleFactory.create(text))

    def download(self):
        self.completed = 0

        while self.completed < 100:
            self.completed += 0.0001
            self.progress.setValue(self.completed)


    def enlarge_window(self, state):
        if state == Qt.Checked:
            self.setGeometry(50, 50, 1000, 600)
        else:
            self.setGeometry(50, 50 , 500, 300)


    def close_application(self):

        choice = QMessageBox.question(self, 'Message',
                                     "Are you sure to quit?", QMessageBox.Yes |
                                     QMessageBox.No, QMessageBox.No)

        if choice == QMessageBox.Yes:
            print('quit application')
            sys.exit()
        else:
            pass


if __name__ == "__main__":  # had to add this otherwise app crashed

    def run():
        app = QApplication(sys.argv)
        Gui = window()
        sys.exit(app.exec_())

run()

-kenwaldek 8 years ago

You must be logged in to post. Please login or register an account.

Have found the error finally

    def file_open(self):
        # need to make name an tupple otherwise i had an error and app crashed
        name, _ = QFileDialog.getOpenFileName(self, 'Open File', options=QFileDialog.DontUseNativeDialog)
        print('tot na dialog gelukt')
        file = open(name, 'r')
        print('na het inlezen gelukt')
        self.editor()

        with file:
            text = file.read()
            self.textEdit.setText(text)

-kenwaldek 8 years ago

You must be logged in to post. Please login or register an account.