将Qt Designer的ui文件转换为PySide2使用的.py文件_qt designer导出成.py

20201206修订：在Pyside2的5.15.2版本中，从ui生成py文件过程，命令从“uic”变为“pyside2-uic”

Qt Designer 设计的ui文件，就是一个xml文件，通过pyside-uic可以转换成标准的.py文件 。通过QtDesigner创建的ui如图：

我们切入正题：

1：首先要保证将pyside2-uic.exe加到环境变量Path中。根据我的Python，PySide2安装路径。设置具体如下图：

2：使用PySide2中的QtDesigner工具创建具体的ui文件。QtDesigner路径如下：

3：将创建的ui文件使用命令生成对应的.py文件。先从系统的cmd进入到ui文件的位置，然后输入命令：

pyside2-uic ****.ui -o ****.py

进行文件转换。注：PySide2 5.15.2版本中“pyside2-uic”变为“uic”，但是cmd中的命令uic无效，只能用“pyside2-uic”命令

运行正常。生成的py文件代码如下：

# -*- coding: utf-8 -*-
 
# Form implementation generated from reading ui file 'untitled.ui',
# licensing of 'untitled.ui' applies.
#
# Created: Mon May 11 20:42:28 2020
#      by: pyside2-uic  running on PySide2 5.12.6
#
# WARNING! All changes made in this file will be lost!
 
from PySide2 import QtCore, QtGui, QtWidgets
 
class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.widget = QtWidgets.QWidget(self.centralwidget)
        self.widget.setGeometry(QtCore.QRect(0, 0, 801, 571))
        self.widget.setObjectName("widget")
        self.verticalLayout = QtWidgets.QVBoxLayout(self.widget)
        self.verticalLayout.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout.setObjectName("verticalLayout")
        self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
        self.horizontalLayout = QtWidgets.QHBoxLayout()
        self.horizontalLayout.setObjectName("horizontalLayout")
        self.pushButton = QtWidgets.QPushButton(self.widget)
        self.pushButton.setObjectName("pushButton")
        self.horizontalLayout.addWidget(self.pushButton)
        self.pushButton_2 = QtWidgets.QPushButton(self.widget)
        self.pushButton_2.setObjectName("pushButton_2")
        self.horizontalLayout.addWidget(self.pushButton_2)
        self.horizontalLayout_2.addLayout(self.horizontalLayout)
        self.label = QtWidgets.QLabel(self.widget)
        self.label.setObjectName("label")
        self.horizontalLayout_2.addWidget(self.label)
        self.verticalLayout.addLayout(self.horizontalLayout_2)
        self.plainTextEdit = QtWidgets.QPlainTextEdit(self.widget)
        self.plainTextEdit.setObjectName("plainTextEdit")
        self.verticalLayout.addWidget(self.plainTextEdit)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
 
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)
 
    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(QtWidgets.QApplication.translate("MainWindow", "MainWindow", None, -1))
        self.pushButton.setText(QtWidgets.QApplication.translate("MainWindow", "PushButton", None, -1))
        self.pushButton_2.setText(QtWidgets.QApplication.translate("MainWindow", "PushButton", None, -1))
        self.label.setText(QtWidgets.QApplication.translate("MainWindow", "TextLabel", None, -1))
 

4：然后将生成的.py文件放到具体路径下，通过py进行加载，具体示例代码如下：

import sys
from PySide2.QtWidgets import QApplication
from PySide2.QtWidgets import QMainWindow
 
from ch06.Untitled import Ui_MainWindow
 
 
class LoginForm(QMainWindow):
    def __init__(self, parent=None):
        QMainWindow.__init__(self, parent)
 
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)
 
 
if __name__ == '__main__':
    app = QApplication(sys.argv)
    form = LoginForm()
    form.show()
    sys.exit(app.exec_())

运行，结果如下图：