PyQt4转换ui文件为py文件

1.转换ui为py

.py文件是这样生成的：

在cmd控制台下,进入uic目录:

cd C:\Users\MVTECH\Anaconda3\Lib\site-packages\PyQt4\uic

输入命令：

python pyuic.py "ui文件路径" -o "py文件路径"

完成以上操作以后会生成.py文件，以下为示例代码：

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'C:\experiment\Kezhihuang\ECGMachineLearning\ECGMachineLearning.ui'
#
# Created by: PyQt4 UI code generator 4.11.4
#
# WARNING! All changes made in this file will be lost!

import sys
from PyQt4 import QtCore, QtGui

try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    def _fromUtf8(s):
        return s

try:
    _encoding = QtGui.QApplication.UnicodeUTF8
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig)

class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName(_fromUtf8("Form"))
        Form.resize(559, 566)
        self.gridLayout_2 = QtGui.QGridLayout(Form)
        self.gridLayout_2.setObjectName(_fromUtf8("gridLayout_2"))
        self.verticalLayout = QtGui.QVBoxLayout()
        self.verticalLayout.setMargin(0)
        self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
        self.groupBox = QtGui.QGroupBox(Form)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.groupBox.sizePolicy().hasHeightForWidth())
        self.groupBox.setSizePolicy(sizePolicy)
        self.groupBox.setObjectName(_fromUtf8("groupBox"))
        self.gridLayout_3 = QtGui.QGridLayout(self.groupBox)
        self.gridLayout_3.setObjectName(_fromUtf8("gridLayout_3"))
        self.horizontalLayout = QtGui.QHBoxLayout()
        self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
        self.label = QtGui.QLabel(self.groupBox)
        self.label.setObjectName(_fromUtf8("label"))
        self.horizontalLayout.addWidget(self.label)
        self.lineEdit = QtGui.QLineEdit(self.groupBox)
        self.lineEdit.setMinimumSize(QtCore.QSize(251, 0))
        self.lineEdit.setObjectName(_fromUtf8("lineEdit"))
        self.horizontalLayout.addWidget(self.lineEdit)
        self.pushButton = QtGui.QPushButton(self.groupBox)
        self.pushButton.setObjectName(_fromUtf8("pushButton"))
        self.horizontalLayout.addWidget(self.pushButton)
        self.gridLayout_3.addLayout(self.horizontalLayout, 0, 0, 1, 1)
        self.verticalLayout.addWidget(self.groupBox)
        self.groupBox_2 = QtGui.QGroupBox(Form)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.groupBox_2.sizePolicy().hasHeightForWidth())
        self.groupBox_2.setSizePolicy(sizePolicy)
        self.groupBox_2.setObjectName(_fromUtf8("groupBox_2"))
        self.gridLayout_4 = QtGui.QGridLayout(self.groupBox_2)
        self.gridLayout_4.setObjectName(_fromUtf8("gridLayout_4"))
        self.gridLayout = QtGui.QGridLayout()
        self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
        self.checkBox_6 = QtGui.QCheckBox(self.groupBox_2)
        self.checkBox_6.setObjectName(_fromUtf8("checkBox_6"))
        self.gridLayout.addWidget(self.checkBox_6, 1, 1, 1, 1)
        self.label_2 = QtGui.QLabel(self.groupBox_2)
        self.label_2.setObjectName(_fromUtf8("label_2"))
        self.gridLayout.addWidget(self.label_2, 0, 0, 1, 1)
        self.checkBox_5 = QtGui.QCheckBox(self.groupBox_2)
        self.checkBox_5.setObjectName(_fromUtf8("checkBox_5"))
        self.gridLayout.addWidget(self.checkBox_5, 0, 5, 1, 1)
        self.checkBox = QtGui.QCheckBox(self.groupBox_2)
        self.checkBox.setObjectName(_fromUtf8("checkBox"))
        self.gridLayout.addWidget(self.checkBox, 0, 1, 1, 1)
        self.checkBox_7 = QtGui.QCheckBox(self.groupBox_2)
        self.checkBox_7.setObjectName(_fromUtf8("checkBox_7"))
        self.gridLayout.addWidget(self.checkBox_7, 1, 2, 1, 1)
        self.checkBox_2 = QtGui.QCheckBox(self.groupBox_2)
        self.checkBox_2.setObjectName(_fromUtf8("checkBox_2"))
        self.gridLayout.addWidget(self.checkBox_2, 0, 2, 1, 1)
        self.checkBox_9 = QtGui.QCheckBox(self.groupBox_2)
        self.checkBox_9.setObjectName(_fromUtf8("checkBox_9"))
        self.gridLayout.addWidget(self.checkBox_9, 1, 4, 1, 1)
        self.checkBox_3 = QtGui.QCheckBox(self.groupBox_2)
        self.checkBox_3.setObjectName(_fromUtf8("checkBox_3"))
        self.gridLayout.addWidget(self.checkBox_3, 0, 3, 1, 1)
        self.pushButton_2 = QtGui.QPushButton(self.groupBox_2)
        self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
        self.gridLayout.addWidget(self.pushButton_2, 0, 6, 2, 1)
        self.checkBox_4 = QtGui.QCheckBox(self.groupBox_2)
        self.checkBox_4.setObjectName(_fromUtf8("checkBox_4"))
        self.gridLayout.addWidget(self.checkBox_4, 0, 4, 1, 1)
        self.checkBox_8 = QtGui.QCheckBox(self.groupBox_2)
        self.checkBox_8.setObjectName(_fromUtf8("checkBox_8"))
        self.gridLayout.addWidget(self.checkBox_8, 1, 3, 1, 1)
        self.gridLayout_4.addLayout(self.gridLayout, 0, 0, 1, 1)
        self.label_2.raise_()
        self.groupBox.raise_()
        self.pushButton_2.raise_()
        self.verticalLayout.addWidget(self.groupBox_2)
        self.groupBox_3 = QtGui.QGroupBox(Form)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.groupBox_3.sizePolicy().hasHeightForWidth())
        self.groupBox_3.setSizePolicy(sizePolicy)
        self.groupBox_3.setObjectName(_fromUtf8("groupBox_3"))
        self.gridLayout_5 = QtGui.QGridLayout(self.groupBox_3)
        self.gridLayout_5.setObjectName(_fromUtf8("gridLayout_5"))
        self.horizontalLayout_2 = QtGui.QHBoxLayout()
        self.horizontalLayout_2.setObjectName(_fromUtf8("horizontalLayout_2"))
        self.label_3 = QtGui.QLabel(self.groupBox_3)
        self.label_3.setObjectName(_fromUtf8("label_3"))
        self.horizontalLayout_2.addWidget(self.label_3)
        self.comboBox = QtGui.QComboBox(self.groupBox_3)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.comboBox.sizePolicy().hasHeightForWidth())
        self.comboBox.setSizePolicy(sizePolicy)
        self.comboBox.setMinimumSize(QtCore.QSize(161, 0))
        self.comboBox.setObjectName(_fromUtf8("comboBox"))
        self.comboBox.addItem(_fromUtf8(""))
        self.comboBox.addItem(_fromUtf8(""))
        self.comboBox.addItem(_fromUtf8(""))
        self.horizontalLayout_2.addWidget(self.comboBox)
        self.pushButton_3 = QtGui.QPushButton(self.groupBox_3)
        self.pushButton_3.setObjectName(_fromUtf8("pushButton_3"))
        self.horizontalLayout_2.addWidget(self.pushButton_3)
        self.gridLayout_5.addLayout(self.horizontalLayout_2, 0, 0, 1, 1)
        self.comboBox.raise_()
        self.label_3.raise_()
        self.groupBox_2.raise_()
        self.pushButton_3.raise_()
        self.verticalLayout.addWidget(self.groupBox_3)
        self.groupBox_4 = QtGui.QGroupBox(Form)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.groupBox_4.sizePolicy().hasHeightForWidth())
        self.groupBox_4.setSizePolicy(sizePolicy)
        self.groupBox_4.setObjectName(_fromUtf8("groupBox_4"))
        self.gridLayout_6 = QtGui.QGridLayout(self.groupBox_4)
        self.gridLayout_6.setObjectName(_fromUtf8("gridLayout_6"))
        self.horizontalLayout_3 = QtGui.QHBoxLayout()
        self.horizontalLayout_3.setObjectName(_fromUtf8("horizontalLayout_3"))
        self.label_4 = QtGui.QLabel(self.groupBox_4)
        self.label_4.setObjectName(_fromUtf8("label_4"))
        self.horizontalLayout_3.addWidget(self.label_4)
        self.comboBox_2 = QtGui.QComboBox(self.groupBox_4)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.comboBox_2.sizePolicy().hasHeightForWidth())
        self.comboBox_2.setSizePolicy(sizePolicy)
        self.comboBox_2.setMinimumSize(QtCore.QSize(161, 0))
        self.comboBox_2.setObjectName(_fromUtf8("comboBox_2"))
        self.comboBox_2.addItem(_fromUtf8(""))
        self.comboBox_2.addItem(_fromUtf8(""))
        self.comboBox_2.addItem(_fromUtf8(""))
        self.comboBox_2.addItem(_fromUtf8(""))
        self.horizontalLayout_3.addWidget(self.comboBox_2)
        self.label_5 = QtGui.QLabel(self.groupBox_4)
        self.label_5.setObjectName(_fromUtf8("label_5"))
        self.horizontalLayout_3.addWidget(self.label_5)
        self.spinBox = QtGui.QSpinBox(self.groupBox_4)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.spinBox.sizePolicy().hasHeightForWidth())
        self.spinBox.setSizePolicy(sizePolicy)
        self.spinBox.setMaximumSize(QtCore.QSize(42, 22))
        self.spinBox.setObjectName(_fromUtf8("spinBox"))
        self.horizontalLayout_3.addWidget(self.spinBox)
        self.pushButton_4 = QtGui.QPushButton(self.groupBox_4)
        self.pushButton_4.setObjectName(_fromUtf8("pushButton_4"))
        self.horizontalLayout_3.addWidget(self.pushButton_4)
        self.gridLayout_6.addLayout(self.horizontalLayout_3, 0, 0, 1, 1)
        self.verticalLayout.addWidget(self.groupBox_4)
        self.groupBox_5 = QtGui.QGroupBox(Form)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.groupBox_5.sizePolicy().hasHeightForWidth())
        self.groupBox_5.setSizePolicy(sizePolicy)
        self.groupBox_5.setObjectName(_fromUtf8("groupBox_5"))
        self.gridLayout_7 = QtGui.QGridLayout(self.groupBox_5)
        self.gridLayout_7.setObjectName(_fromUtf8("gridLayout_7"))
        self.textEdit = QtGui.QTextEdit(self.groupBox_5)
        self.textEdit.setObjectName(_fromUtf8("textEdit"))
        self.gridLayout_7.addWidget(self.textEdit, 0, 0, 1, 1)
        self.verticalLayout.addWidget(self.groupBox_5)
        self.verticalLayout.setStretch(0, 1)
        self.verticalLayout.setStretch(2, 1)
        self.verticalLayout.setStretch(3, 1)
        self.verticalLayout.setStretch(4, 5)
        self.gridLayout_2.addLayout(self.verticalLayout, 0, 0, 1, 1)

        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)

    def retranslateUi(self, Form):
        Form.setWindowTitle(_translate("Form", "Form", None))
        self.groupBox.setTitle(_translate("Form", "Data Import", None))
        self.label.setText(_translate("Form", "step1:", None))
        self.pushButton.setText(_translate("Form", "load", None))
        self.groupBox_2.setTitle(_translate("Form", "Feature extraction", None))
        self.checkBox_6.setText(_translate("Form", "wvlt", None))
        self.label_2.setText(_translate("Form", "step2:", None))
        self.checkBox_5.setText(_translate("Form", "hbf5", None))
        self.checkBox.setText(_translate("Form", "resample_10", None))
        self.checkBox_7.setText(_translate("Form", "wvlt+pca", None))
        self.checkBox_2.setText(_translate("Form", "raw", None))
        self.checkBox_9.setText(_translate("Form", "myMorph", None))
        self.checkBox_3.setText(_translate("Form", "u-lbp", None))
        self.pushButton_2.setText(_translate("Form", "Feature extraction", None))
        self.checkBox_4.setText(_translate("Form", "lbp", None))
        self.checkBox_8.setText(_translate("Form", "HOS", None))
        self.groupBox_3.setTitle(_translate("Form", "Feature selection", None))
        self.label_3.setText(_translate("Form", "step3:", None))
        self.comboBox.setItemText(0, _translate("Form", "PER", None))
        self.comboBox.setItemText(1, _translate("Form", "PCA", None))
        self.comboBox.setItemText(2, _translate("Form", "Best", None))
        self.pushButton_3.setText(_translate("Form", "Feature selection", None))
        self.groupBox_4.setTitle(_translate("Form", "Training model or import model", None))
        self.label_4.setText(_translate("Form", "step4:", None))
        self.comboBox_2.setItemText(0, _translate("Form", "bst", None))
        self.comboBox_2.setItemText(1, _translate("Form", "svm", None))
        self.comboBox_2.setItemText(2, _translate("Form", "knn", None))
        self.comboBox_2.setItemText(3, _translate("Form", "rfc", None))
        self.label_5.setText(_translate("Form", "GridSearch:", None))
        self.pushButton_4.setText(_translate("Form", "Training model", None))
        self.groupBox_5.setTitle(_translate("Form", "Show results", None))

注意：还没结束，这个时候你运行.py文件不会出错，但是也不会出现界面，要想运行出界面还需另外添加代码。

2.转换后的py文件还不能运行，需要可视化操作才可运行。

有两种方法：

第一种方法：直接在生成的.py文件的后面添加以下代码：

class MainWindow(QtGui.QWidget):
    def __init__(self,parent=None):
        QtGui.QWidget.__init__(self,parent)
        self.ui = Ui_Form()
        self.ui.setupUi(self)     
    
if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    myapp = MainWindow()
    myapp.show()
    app.exec_()

第二种方法：在同目录下新建Main.py，根据设计UI时选择窗口类型填写脚本内容

如图，图中根窗口类名（此处为QWidget）对象名（此处为Form），即如下填写：

# -*- coding: utf-8 -*-
"""
Created on Thu Sep  6 09:47:12 2018

@author: MVTECH
"""

from PyQt4 import QtGui
from ECGMachineLearning import *
import sys

class MainWindow(QtGui.QWidget):
    def __init__(self,parent=None):
        QtGui.QWidget.__init__(self,parent)
        self.ui = Ui_Form()
        self.ui.setupUi(self)
        
if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    myapp = MainWindow()
    myapp.show()
    app.exec_()

其他类似窗口只需替换代码中的红色和蓝色部分为窗口实例类名、对象名即可！！！

注意：像Dialog这样的窗口还需要在MainWindow中实现accept()（确认）和reject()（取消）函数，自己融会贯通即可！！！