python易错点 | AttributeError: 'xxxx' object has no attribute 'xxxx'-蒲公英云

python易错点 | AttributeError: 'xxxx' object has no attribute 'xxxx'

迷南。 2023-07-07 08:56 88阅读 0赞

今天继续在学pyqt，跟着教程一个个敲代码的时候，以下代码出现错误：

import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class QPushButtonDemo(QDialog):
    def __init__(self):
        super(QPushButtonDemo,self).__init__()
        self.initUI()
        def initUI(self):
            self.setWindowTitle('QPushButton Demo')
            layout=QVBoxLayout()
            self.button1=QPushButton('第一个按钮')
            self.button1.setText('First button')
            self.button1.setCheckable(True)
            self.button1.toggle()
            self.button1.clicked.connect(lambda:self.whichButton(self.button1))
            layout.addWidget(self.button1)
            self.setLayout(layout)
            def whichButton(self,btn):
                print('被单击的按钮是<'+btn.text()+'>')
if __name__=='__main__':
    app=QApplication(sys.argv)
    main=QPushButtonDemo()
    main.show()
    sys.exit(app.exec_())

报错：

Traceback (most recent call last):
  File "E:/ICE的身家性命/iceplan0401/python课程/pylearning/pyqt/QPushButtonDemo.py", line 29, in <module>
    main=QPushButtonDemo()
  File "E:/ICE的身家性命/iceplan0401/python课程/pylearning/pyqt/QPushButtonDemo.py", line 9, in __init__
    self.initUI()
AttributeError: 'QPushButtonDemo' object has no attribute 'initUI'