Qt designer打开并设计

1.pyqt5等依赖包安装好后，按下win键输入designer就会出现qt designer

在软件中设计好后保存得到.ui文件。如下图，

将.ui文件转为.py文件

代码：

pyuic5 -o 123.py 2.ui

生成的py文件内容

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

# Form implementation generated from reading ui file '2.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# 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(800, 400)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.iou = QtWidgets.QSpinBox(self.centralwidget)
        self.iou.setGeometry(QtCore.QRect(30, 170, 40, 20))
        self.iou.setProperty("value", 50)
        self.iou.setObjectName("iou")
        self.horizontalSlider = QtWidgets.QSlider(self.centralwidget)
        self.horizontalSlider.setGeometry(QtCore.QRect(170, 170, 160, 22))
        self.horizontalSlider.setProperty("value", 50)
        self.horizontalSlider.setOrientation(QtCore.Qt.Horizontal)
        self.horizontalSlider.setObjectName("horizontalSlider")
        #MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 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)
        self.iou.valueChanged['int'].connect(self.horizontalSlider.setValue)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

创建新的py文件（显示文件）

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5 import QtCore, QtGui, QtWidgets
from zlx import Ui_MainWindow

class mywindow(QtWidgets.QWidget,Ui_MainWindow):
    def __init__(self):
        super(mywindow,self).__init__()
        self.setupUi(self)
        self.retranslateUi(self)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    myshow = mywindow()
    myshow.show()
    sys.exit(app.exec_())

这边需要注意的是:

运行

在cmd上进入anaconda的虚拟环境后运行main.py文件：

运行的效果如图：

这边我演示的是一个自设窗口+滑动条，他们的值是对应的，自设窗口的数值变化，滑动条也会相对应的变化。