/**************************************************************************** ** ** Copyright (C) 2019 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the Qt Creator documentation. ** ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU Free Documentation License Usage ** Alternatively, this file may be used under the terms of the GNU Free ** Documentation License version 1.3 as published by the Free Software ** Foundation and appearing in the file included in the packaging of ** this file. Please review the following information to ensure ** the GNU Free Documentation License version 1.3 requirements ** will be met: https://www.gnu.org/licenses/fdl-1.3.html. ** ****************************************************************************/ /*! //! [python project wizards] \section2 Creating Qt for Python Applications \l {https://doc.qt.io/qtforpython/index.html}{Qt for Python} enables you to use Qt 5 API in Python applications. You can use the PySide2 module to gain access to individual Qt modules, such as \l {Qt Core}, \l {Qt GUI}, and \l {Qt Widgets}. The Qt for Python Application wizards generate a \c {.pyproject} file that lists the files in the Python project and a \c {.py} file that contains some boilerplate code. The \c{.pyproject} files are JSON-based configuration files that replace the previously used \c {.pyqtc} configuration files. You can still open and use \c {.pyqtc} files, but we recommend that you choose \c{.pyproject} files for new projects. The \uicontrol {Qt for Python - Window} wizard enables you to create a Python source file for a new class that you can add to a Python project. Specify the class name, base class, and and source file for the class. \image qtcreator-python-wizard-app-window.png The Window wizard adds the imports to the source file to provide access to the QApplication and the base class you selected in the Qt Widgets module: \badcode import sys from PySide2.QtWidgets import QApplication, QWidget \endcode The Window wizard also adds a main class with the specified name that inherits from the specified base class: \badcode class MyWidget(QWidget): def __init__(self): QWidget.__init__(self) \endcode Next, the Window wizard adds a main function, where it creates a QApplication instance. As Qt can receive arguments from the command line, you can pass any arguments to the QApplication object. Usually, you do not need to pass any arguments, and you can use the following approach: \badcode if __name__ == "__main__": app = QApplication([]) \endcode Next, the Window wizard instantiates the \c MainWindow class and shows it: \badcode window = MyWidget() window.show() ... \endcode Finally, the Window wizard calls the \c app.exec_() method to enter the Qt main loop and start executing the Qt code: \badcode sys.exit(app.exec_()) \endcode The Empty wizard adds similar code to the source file, but it does not add any classes, so you need to add and instantiate them yourself. For examples of creating Qt for Python applications, see \l {https://doc.qt.io/qtforpython/tutorials/index.html} {Qt for Python Examples and Tutorials}. //! [python project wizards] */