pyqt界面按钮调用py文件问题

我想要做一个界面，点击btn_change调用curve_year文件，这是调用的代码

from PyQt5 import QtCore, QtGui, QtWidgets

import curve_year


class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(788, 683)
        self.layoutWidget = QtWidgets.QWidget(Form)
        self.layoutWidget.setGeometry(QtCore.QRect(260, 220, 201, 211))
        self.layoutWidget.setObjectName("layoutWidget")
        self.verticalLayout = QtWidgets.QVBoxLayout(self.layoutWidget)
        self.verticalLayout.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout.setObjectName("verticalLayout")
        self.btn_distribution = QtWidgets.QPushButton(self.layoutWidget)
        self.btn_distribution.setObjectName("btn_distribution")
        self.verticalLayout.addWidget(self.btn_distribution)
        self.btn_change = QtWidgets.QPushButton(self.layoutWidget)
        self.btn_change.setObjectName("btn_change")
        self.verticalLayout.addWidget(self.btn_change)
        self.btn_change.clicked.connect(self.train)



    def train(self):
        curve_year.main()  # 调用main.py,进行train
        print("train")

    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "海域风场分析工具"))
        Form.setAccessibleName(_translate("Form", "海域"))
        self.btn_distribution.setText(_translate("Form", "风速分布"))
        self.btn_change.setText(_translate("Form", "平均风速变化"))

但是运行代码之后直接跳出运行curve_year 的结果，没有之前的界面了

？你这个调用好像不对吧，建议搜搜网上教程，pyqt启动界面是有一套完整代码的