from PyQt5.QtWidgets import QApplication, QMainWindow, QDialog
from qtui.setparamdialog import Ui_Dialog #designer.exe导出的ui对应的python文件

class MyDialog(QDialog, Ui_Dialog):
    def __init__(self, parent=None):
        super(MyDialog, self).__init__(parent)
        self.setupUi(self)
    
        self.data = {}

    def set_data(self, data):
        self.data = data

    def get_data(self):
        return self.data

# 使用dialog
self.dialog = MyDialog()
self.dialog.set_data({msg="1"})
self.dialog.show()
action = self.dialog.exec_() # 返回dialog的操作，取消0或者确定1，看dialog是哪一种类型
print("action =", action)

data = self.dialog.get_data() # 获取自定义数据