先安装pyside

yay -S pyside2   

windows可以

pip install pyside2 -i https://pypi.douban.com/simple/

新建一个项目测试

# This Python file uses the following encoding: utf-8
import sys
from PySide2.QtWidgets import QApplication, QWidget,QMainWindow,QPushButton,QPlainTextEdit,QMessageBoxdef handleCalc():info = textEdit.toPlainText()QMessageBox.about(window, '标题','hello world')if __name__ == "__main__":app = QApplication([])window = QMainWindow()window.resize(600,400)window.move(300,300)window.setWindowTitle("hello Window")textEdit = QPlainTextEdit(window)textEdit.setPlaceholderText("hello textEdit")textEdit.move(10,25)textEdit.resize(300,350)button = QPushButton("弹出", window)button.move(380,80)button.clicked.connect(handleCalc)window.show()sys.exit(app.exec_())