之前写过一个简单的PYQT5的简要说明：
今天在原来的基础上补充下信息：

pyqt5主要采用两部分进行使用：
1.desinget通过画图生成的代码–不需要修改内容，直接调用这部分
2.调用图形界面产生的代码,只需要写这部分代码就是可以了，命名规则run+生成的代码，上面生成的代码如果叫“conver.py”的话，我们这个主代码就是"runconver.py"

上代码：
1.runconver.py

import sys
import conver
from PyQt5.QtWidgets import QApplication, QMainWindow

from functools import partial

if __name__ == '__main__':
    app = QApplication(sys.argv)
    mainwindow = QMainWindow()
    ui = conver.Ui_MainWindow()
    ui.setupUi(mainwindow)
    mainwindow.show()
    
    sys.exit(app.exec_())

2.conver.py–图形界面生成的代码

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file '转换器.ui'
#
# Created by: PyQt5 UI code generator 5.15.0
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.


from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(545, 235)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(30, 40, 81, 31))
        font = QtGui.QFont()
        font.setFamily("ADMUI3Lg")
        font.setPointSize(16)
        self.label.setFont(font)
        self.label.setObjectName("label")
        self.widget = QtWidgets.QWidget(self.centralwidget)
        self.widget.setGeometry(QtCore.QRect(30, 100, 431, 25))
        self.widget.setObjectName("widget")
        self.gridLayout = QtWidgets.QGridLayout(self.widget)
        self.gridLayout.setContentsMargins(0, 0, 0, 0)
        self.gridLayout.setObjectName("gridLayout")
        self.lineEdit = QtWidgets.QLineEdit(self.widget)
        self.lineEdit.setObjectName("lineEdit")
        self.gridLayout.addWidget(self.lineEdit, 0, 0, 1, 1)
        self.label_2 = QtWidgets.QLabel(self.widget)
        self.label_2.setObjectName("label_2")
        self.gridLayout.addWidget(self.label_2, 0, 1, 1, 1)
        self.pushButton = QtWidgets.QPushButton(self.widget)
        self.pushButton.setObjectName("pushButton")
        self.gridLayout.addWidget(self.pushButton, 0, 2, 1, 1)
        self.lineEdit_2 = QtWidgets.QLineEdit(self.widget)
        self.lineEdit_2.setObjectName("lineEdit_2")
        self.gridLayout.addWidget(self.lineEdit_2, 0, 3, 1, 1)
        self.label_3 = QtWidgets.QLabel(self.widget)
        self.label_3.setObjectName("label_3")
        self.gridLayout.addWidget(self.label_3, 0, 4, 1, 1)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 545, 23))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.label.setText(_translate("MainWindow", "汇率转换器"))
        self.label_2.setText(_translate("MainWindow", "USD"))
        self.pushButton.setText(_translate("MainWindow", "转换！"))

        self.pushButton.clicked.connect(self.convert)

        self.label_3.setText(_translate("MainWindow", "CNY"))

    def convert(self):
        input = self.lineEdit.text()
        # result = float(input) * 6.7
        result = float(input) * 6
        self.lineEdit_2.setText(str(result))

调用的注意事项以及对照关系：