PyQt5点击按钮产生新窗体

import sys
from PyQt5.QtWidgets import QApplication,QWidget
from form1 import Ui_Form1
from form2 import Ui_Form2

class myform1(QWidget,Ui_Form1):
    def __init__(self):
        super().__init__()
        self.setupUi(self)
    def close_w1(self):       #点击按钮将窗体1关掉
        self.close()

class myform2(QWidget,Ui_Form2):
    def __init__(self):
        super().__init__()
        self.setupUi(self)
    def show_w2(self):#显示窗体2
        self.show()

if __name__=='__main__':
    app=QApplication(sys.argv)
    w1=myform1()
    w2=myform2()
    w1.show()
    w1.btn.clicked.connect(w1.close_w1)
    w1.btn.clicked.connect(w2.show_w2)
    app.exec_()

没有那么多乱七八糟的东西，还是很简单的。