PyQt 6

安装

依赖：Python 3.8+

pip install pyside6

import PySide6.QtCore
print(PySide6.__version__)         # 打印 PySide6 版本
print(PySide6.QtCore.__version__)  # 打印用于编译 PySide6 的 Qt 版本

使用 Qt Widgets

main.py:

import sys
import random
from PySide6 import QtCore, QtWidgets, QtGui

class MyWidget(QtWidgets.QWidget):
    def __init__(self):
        super().__init__()

        self.hello = ["Hallo Welt", "Hei maailma", "Hola Mundo", "Привет мир"]

        self.button = QtWidgets.QPushButton("Click me!")
        self.text = QtWidgets.QLabel("Hello World",
                                     alignment=QtCore.Qt.AlignCenter)

        self.layout = QtWidgets.QVBoxLayout(self)
        self.layout.addWidget(self.text)
        self.layout.addWidget(self.button)

        self.button.clicked.connect(self.magic)

    @QtCore.Slot()
    def magic(self):
        self.text.setText(random.choice(self.hello))

if __name__ == "__main__":
    app = QtWidgets.QApplication([])

    widget = MyWidget()
    widget.resize(800, 600)
    widget.show()

    sys.exit(app.exec())

python main.py

使用 Qt Quick

main.py:

import sys
from PySide6.QtGui import QGuiApplication
from PySide6.QtQml import QQmlApplicationEngine

if __name__ == "__main__":
    app = QGuiApplication(sys.argv)
    engine = QQmlApplicationEngine()
    engine.addImportPath(sys.path[0])
    engine.loadFromModule("Example", "Main")
    if not engine.rootObjects():
        sys.exit(-1)
    exit_code = app.exec()
    del engine
    sys.exit(exit_code)

qml/Main.qml:

import QtQuick
import QtQuick.Controls
import QtQuick.Layouts

Window {
    width: 300
    height: 200
    visible: true
    title: "Hello World"

    readonly property list<string> texts: ["Hallo Welt", "Hei maailma",
                                           "Hola Mundo", "Привет мир"]

    function setText() {
        var i = Math.round(Math.random() * 3)
        text.text = texts[i]
    }

    ColumnLayout {
        anchors.fill:  parent

        Text {
            id: text
            text: "Hello World"
            Layout.alignment: Qt.AlignHCenter
        }
        Button {
            text: "Click me"
            Layout.alignment: Qt.AlignHCenter
            onClicked:  setText()
        }
    }
}

qml/qmldir:

module qml
Main 254.0 Main.qml

python main.py

参考：Getting Started | Qt for Python