vscode+pyside6 无法正常显示窗口,报错qt.qpa.plugin: Could not find the Qt platform plugin "windows" in ""

执行时报错

qt.qpa.plugin: Could not find the Qt platform plugin "windows" in ""

This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem

.

根据给出的提示可以看出错误原因是系统找不到Qt平台的插件，解决方法则是将PySide2或者PyQt5的plugins目录加入到QT_QPA_PLATFORM_PLUGIN_PATH环境变量里面。

例如：

#%%

import sys

import os

from PySide6 import QtCore, QtWidgets, QtGui

import PySide6

# 加入以下脚本即可正常显示窗口

dirname = os.path.dirname(PySide6.__file__)

plugin_path = os.path.join(dirname, 'plugins', 'platforms')

os.environ['QT_QPA_PLATFORM_PLUGIN_PATH'] = plugin_path

print(plugin_path)

#%%

class MyWidget(QtWidgets.QWidget):

    def __init__(self):

        super().__init__()

        self.button = QtWidgets.QPushButton("点这里")

        self.layout = QtWidgets.QVBoxLayout(self)

        self.layout.addWidget(self.button)

        self.button.clicked.connect(self.showMessage)

    @QtCore.Slot()

    def showMessage(self):

        msgBox = QtWidgets.QMessageBox()

        msgBox.setText("Hello world")

        msgBox.setStandardButtons(QtWidgets.QMessageBox.Ok)

        ret = msgBox.exec()

if __name__ == "__main__":

    app = QtWidgets.QApplication([])

    widget = MyWidget()

    widget.resize(300, 200)

    widget.show()

    sys.exit(app.exec())

二、修改配置文件，避免重复代码

首先 在VS中运行以下代码，找到 platforms 的 路径

import sys

import os

from PySide6 import QtCore, QtWidgets, QtGui

import PySide6

# 加入以下脚本即可正常显示窗口

dirname = os.path.dirname(PySide6.__file__)

plugin_path = os.path.join(dirname, 'plugins', 'platforms')

os.environ['QT_QPA_PLATFORM_PLUGIN_PATH'] = plugin_path

print(plugin_path)

第一个方法：修改PySide2的初始化文件"c:\users\XXX.virtualenvs\pyqt5-3bre18dc\lib\site-packages\PySide2_init_.py" ，在下图位置添加上述代码即可：

第二个方法：set QT_QPA_PLATFORM_PLUGIN_PATH='C:\ProgramData\Anaconda3\lib\site-packages\PySide6\plugins\platforms’

第三个方法：在cmd中运行sysdm.cpl ,在高级、环境变量中添加