import sys
from PyQt5 import QtWidgets
from PyQt5.QtWidgets import QMainWindow
from test import Ui_MainWindow
from PyQt5.QtWidgets import QFileDialog
class MyPyQT_Form(QMainWindow, Ui_MainWindow):
    def __init__(self):
        super(MyPyQT_Form, self).__init__()
        self.setupUi(self)
    # 实现pushButton_click()函数，textEdit是我们放上去的文本框的id
    def pushButton_click(self):
        #self.showText.setText("你点击了按钮")
        dir_path = QFileDialog.getExistingDirectory(self, "choose directory", r"C:\Users\Administrator\Desktop")
        self.showText.setText(dir_path)