import sys

 from PyQt5.QtCore import *

 from PyQt5.QtGui import *

 from PyQt5.QtWidgets import *

 class Form(QDialog):

     def __init__(self,parent=None):

         super().__init__(parent)

         #窗体标题

         self.setWindowTitle('窗体标题！')

         #QLabel标签

         self.aLabel = QLabel(self)

         self.aLabel.setText('ABCD')

         #QSpinBox数字框

         self.mySpinBox = QDoubleSpinBox(self)

         self.mySpinBox.setValue(100)

         self.mySpinBox.setRange(1,666)

         #滑动条

         self.s = QSlider()

         #QListWidget选单

         self.listWidget = QListWidget(self)

         self.listWidget.addItems(['item1','item2','item3'])

         #QPushButton按钮

         self.okButton = QPushButton(self)

         self.okButton.setText("OK")

         #可编辑文本框

         self.lineedit = QLineEdit("Type a string!")

         #不可编辑文本框

         self.browser = QTextBrowser()

         self.browser.append('abcd')

         #下拉选单

         self.comboBox = QComboBox(self)

         itemdata = ['a','b','c']

         self.comboBox.addItems(itemdata)

         layout = QVBoxLayout()

         layout.addWidget(self.aLabel)

         layout.addWidget(self.mySpinBox)

         layout.addWidget(self.s)

         layout.addWidget(self.listWidget)

         layout.addWidget(self.okButton)

         layout.addWidget(self.lineedit)

         layout.addWidget(self.browser)

         layout.addWidget(self.comboBox)

         self.setLayout(layout)

 #下面这段脚本在PyQt GUI编程中几乎通用的

 app = QApplication(sys.argv)

 form = Form()

 form.show()

 app.exec_()