pyqt5多线程（子线程执行将结果返回到主线程上，提示对话框）

1.为什么要多线程执行

在主线程ui界面点击登录后，加延时10s,（模拟调用接口登录，假设耗时10s）,ui主线程在等待请求返回结果，ui界面卡主，转圈，如下图。这个现象在软件中肯定是不能出现的！

2.解决思路

为了解决这个问题，就必须引入多线程，在点击按钮后，主线程触发一个子线程去执行，让子线程执行耗时任务，主线程就会处于空闲状态，那么界面就不会出现转圈卡顿的现象！当子线程任务执行完成后，给主线程自定义信号发送消息，主线程收到，消息，反馈到主界面来！

3.完整的案例代码

完整的案例代码，如下，点击登录按钮是走主线程执行，会出现卡顿；点击忘记密码按钮，会触发子线程执行任务，主线程就处于空闲状态。当子线程任务执行完成后，给主线程自定义信号发送消息，主线程收到，消息，反馈到主界面来！

https://gitee.com/HP_mojin/pyqt_ui/tree/master/pyqt_ui_01

main.py 文件

import sys
import time

from PyQt5 import uic,QtWidgets
from PyQt5.Qt import QApplication, QWidget, QThread
from PyQt5.QtCore import pyqtSignal


class MyThread(QThread): #子线程
    def __init__(self,signal,kwargs ):
        super().__init__()

        self.start_complete_signal=signal #将自定义信号传递过来，
        self.kwargs=kwargs

    def run(self):

        #延时 10秒
        for i in range(10):
            print("是MyThread线程中执行....%d" % (i + 1))
            time.sleep(1)

        self.start_complete_signal.emit(f'子线程，运行完成:{self.kwargs}') #给自定义信号发送消息



class MyWin(QWidget):#主线程 主界面

    # 声明一个信号，只能写在函数外面
    forgot_status_signal = pyqtSignal(str) #自定义信号，接受子线程，执行完成的消息

    def __init__(self):
        super().__init__()
        self.init_ui()

    def init_ui(self):#主界面元素


        self.ui = uic.loadUi("./qt_ui/login_ui.ui") # 加载 qt 设计师，设计出的ui

        # 从ui文件中加载控件
        login_btn1 = self.ui.pushButton #登录按钮
        forgot_btn2 = self.ui.pushButton_2  #忘记密码按钮

        # 给2个按钮绑定槽函数
        login_btn1.clicked.connect(self.login)  # 绑定登录按钮的槽函数
        forgot_btn2.clicked.connect(self.forgot_password)  # 绑定忘记密码按钮的槽函数

        self.forgot_status_signal.connect(self.forgot_status) #绑定自定义信号的槽函数，收到子线程消息，执行绑定的槽函数


    def login(self): #登录按钮绑定的槽函数，主线程执行，出现卡顿

        #耗时 延时10秒
        for i in range(10):
            print("是UI线程中执行....%d" % (i + 1))
            time.sleep(1)

        user_name=self.ui.lineEdit.text() #获取账号输入框text信息
        password = self.ui.lineEdit_2.text()  #获取密码输入框text信息

        dic={
            "user_name":user_name,
            "password":password
        }

        #将返回消息写入显示框
        self.ui.textEdit.setText(f'主线程运行完成：{dic}')
        #输入框刷新显示
        self.ui.textEdit.repaint()

        # 对话框弹框
        QtWidgets.QMessageBox.information(None, '主线程', f'主线程运行完成：{dic}', QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No,
                                          QtWidgets.QMessageBox.Yes)


    def forgot_password(self): #忘记密码按钮 绑定的槽函数，执行后启动子线程
        user_name=self.ui.lineEdit.text() #获取账号输入框text信息
        password = self.ui.lineEdit_2.text()  #获取密码输入框text信息

        dic={
            "user_name":user_name,
            "password":password
        }


        self.my_thread = MyThread(self.forgot_status_signal,dic)  # 创建线程
        self.my_thread.start()  # 开始线程 启动子线程执行任务





    def forgot_status(self,srt): #收到子线程消息,执行绑定的槽函数
        print(f'收到子线程消息：{srt}')
        print("主线程：收到了槽函数，打印消息")

        #将返回消息写入显示框
        self.ui.textEdit.setText(srt)
        #输入框刷新显示
        self.ui.textEdit.repaint()

        # 对话框弹框
        QtWidgets.QMessageBox.information(None, '主线程打印', srt, QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No,
                                          QtWidgets.QMessageBox.Yes)


if __name__ == "__main__":
    app = QApplication(sys.argv)
    myshow = MyWin()
    myshow.ui.show()
    app.exec()

self.ui = uic.loadUi(“./login_ui.ui”)

login_ui.ui 文件

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>846</width>
    <height>536</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <layout class="QGridLayout" name="gridLayout_2">
    <item row="0" column="0">
     <widget class="QTabWidget" name="tabWidget">
      <property name="currentIndex">
       <number>0</number>
      </property>
      <widget class="QWidget" name="tab">
       <attribute name="title">
        <string>类型1</string>
       </attribute>
       <widget class="QWidget" name="layoutWidget">
        <property name="geometry">
         <rect>
          <x>0</x>
          <y>10</y>
          <width>821</width>
          <height>431</height>
         </rect>
        </property>
        <layout class="QGridLayout" name="gridLayout_3">
         <item row="3" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_14">
           <item>
            <widget class="QLabel" name="label_80">
             <property name="text">
              <string>第二位数：</string>
             </property>
            </widget>
           </item>
           <item>
            <layout class="QHBoxLayout" name="horizontalLayout_13">
             <item>
              <layout class="QHBoxLayout" name="horizontalLayout_10">
               <item>
                <widget class="QLabel" name="label_78">
                 <property name="text">
                  <string>最大值：</string>
                 </property>
                </widget>
               </item>
               <item>
                <widget class="QSpinBox" name="spinBox_45"/>
               </item>
              </layout>
             </item>
             <item>
              <layout class="QHBoxLayout" name="horizontalLayout_11">
               <item>
                <widget class="QLabel" name="label_83">
                 <property name="text">
                  <string>最小值：</string>
                 </property>
                </widget>
               </item>
               <item>
                <widget class="QSpinBox" name="spinBox_48"/>
               </item>
              </layout>
             </item>
             <item>
              <layout class="QHBoxLayout" name="horizontalLayout_12">
               <item>
                <widget class="QLabel" name="label_85">
                 <property name="text">
                  <string>保留小数：</string>
                 </property>
                </widget>
               </item>
               <item>
                <widget class="QSpinBox" name="spinBox_43"/>
               </item>
               <item>
                <spacer name="horizontalSpacer_4">
                 <property name="orientation">
                  <enum>Qt::Horizontal</enum>
                 </property>
                 <property name="sizeHint" stdset="0">
                  <size>
                   <width>40</width>
                   <height>20</height>
                  </size>
                 </property>
                </spacer>
               </item>
              </layout>
             </item>
            </layout>
           </item>
          </layout>
         </item>
         <item row="2" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_9">
           <item>
            <widget class="QLabel" name="label_82">
             <property name="text">
              <string>第一位数：</string>
             </property>
            </widget>
           </item>
           <item>
            <layout class="QHBoxLayout" name="horizontalLayout_8">
             <item>
              <layout class="QHBoxLayout" name="horizontalLayout_5">
               <item>
                <widget class="QLabel" name="label_84">
                 <property name="text">
                  <string>最大值：</string>
                 </property>
                </widget>
               </item>
               <item>
                <widget class="QSpinBox" name="spinBox_47"/>
               </item>
              </layout>
             </item>
             <item>
              <layout class="QHBoxLayout" name="horizontalLayout_7">
               <item>
                <layout class="QHBoxLayout" name="horizontalLayout_6">
                 <item>
                  <widget class="QLabel" name="label_79">
                   <property name="text">
                    <string>最小值：</string>
                   </property>
                  </widget>
                 </item>
                 <item>
                  <widget class="QSpinBox" name="spinBox_46"/>
                 </item>
                </layout>
               </item>
               <item>
                <widget class="QLabel" name="label_81">
                 <property name="text">
                  <string>保留小数：</string>
                 </property>
                </widget>
               </item>
               <item>
                <widget class="QSpinBox" name="spinBox_44"/>
               </item>
               <item>
                <spacer name="horizontalSpacer_3">
                 <property name="orientation">
                  <enum>Qt::Horizontal</enum>
                 </property>
                 <property name="sizeHint" stdset="0">
                  <size>
                   <width>40</width>
                   <height>20</height>
                  </size>
                 </property>
                </spacer>
               </item>
              </layout>
             </item>
            </layout>
           </item>
          </layout>
         </item>
         <item row="4" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_16">
           <item>
            <widget class="QLabel" name="label_77">
             <property name="text">
              <string>输出路径：</string>
             </property>
            </widget>
           </item>
           <item>
            <layout class="QHBoxLayout" name="horizontalLayout_15">
             <item>
              <widget class="QLineEdit" name="lineEdit_7"/>
             </item>
             <item>
              <widget class="QPushButton" name="pushButton_7">
               <property name="text">
                <string>浏览</string>
               </property>
              </widget>
             </item>
            </layout>
           </item>
          </layout>
         </item>
         <item row="5" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_18">
           <item>
            <spacer name="horizontalSpacer_6">
             <property name="orientation">
              <enum>Qt::Horizontal</enum>
             </property>
             <property name="sizeHint" stdset="0">
              <size>
               <width>40</width>
               <height>20</height>
              </size>
             </property>
            </spacer>
           </item>
           <item>
            <widget class="QPushButton" name="pushButton">
             <property name="text">
              <string>开始执行</string>
             </property>
            </widget>
           </item>
           <item>
            <spacer name="horizontalSpacer_7">
             <property name="orientation">
              <enum>Qt::Horizontal</enum>
             </property>
             <property name="sizeHint" stdset="0">
              <size>
               <width>40</width>
               <height>20</height>
              </size>
             </property>
            </spacer>
           </item>
          </layout>
         </item>
         <item row="6" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_17">
           <item>
            <widget class="QLabel" name="label_97">
             <property name="text">
              <string>日志输出：</string>
             </property>
            </widget>
           </item>
           <item>
            <spacer name="horizontalSpacer_5">
             <property name="orientation">
              <enum>Qt::Horizontal</enum>
             </property>
             <property name="sizeHint" stdset="0">
              <size>
               <width>40</width>
               <height>20</height>
              </size>
             </property>
            </spacer>
           </item>
          </layout>
         </item>
         <item row="1" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_3">
           <item>
            <widget class="QLabel" name="label_75">
             <property name="text">
              <string>运算方法：</string>
             </property>
            </widget>
           </item>
           <item>
            <layout class="QHBoxLayout" name="horizontalLayout_2">
             <item>
              <widget class="QCheckBox" name="checkBox_29">
               <property name="text">
                <string>加法</string>
               </property>
              </widget>
             </item>
             <item>
              <widget class="QCheckBox" name="checkBox_30">
               <property name="text">
                <string>减法</string>
               </property>
              </widget>
             </item>
             <item>
              <widget class="QCheckBox" name="checkBox_31">
               <property name="text">
                <string>乘法</string>
               </property>
              </widget>
             </item>
             <item>
              <widget class="QCheckBox" name="checkBox_32">
               <property name="text">
                <string>除法</string>
               </property>
              </widget>
             </item>
             <item>
              <spacer name="horizontalSpacer_2">
               <property name="orientation">
                <enum>Qt::Horizontal</enum>
               </property>
               <property name="sizeHint" stdset="0">
                <size>
                 <width>40</width>
                 <height>20</height>
                </size>
               </property>
              </spacer>
             </item>
            </layout>
           </item>
          </layout>
         </item>
         <item row="0" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout">
           <item>
            <widget class="QLabel" name="label_76">
             <property name="text">
              <string>选择题型：</string>
             </property>
            </widget>
           </item>
           <item>
            <widget class="QComboBox" name="comboBox"/>
           </item>
           <item>
            <spacer name="horizontalSpacer">
             <property name="orientation">
              <enum>Qt::Horizontal</enum>
             </property>
             <property name="sizeHint" stdset="0">
              <size>
               <width>40</width>
               <height>20</height>
              </size>
             </property>
            </spacer>
           </item>
          </layout>
         </item>
         <item row="7" column="0">
          <widget class="QTextEdit" name="textEdit"/>
         </item>
        </layout>
       </widget>
      </widget>
      <widget class="QWidget" name="tab_2">
       <attribute name="title">
        <string>类型2</string>
       </attribute>
       <widget class="QWidget" name="layoutWidget">
        <property name="geometry">
         <rect>
          <x>0</x>
          <y>10</y>
          <width>821</width>
          <height>431</height>
         </rect>
        </property>
        <layout class="QGridLayout" name="gridLayout_4">
         <item row="0" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_19">
           <item>
            <widget class="QLabel" name="label_90">
             <property name="text">
              <string>选择题型：</string>
             </property>
            </widget>
           </item>
           <item>
            <widget class="QComboBox" name="comboBox_2"/>
           </item>
           <item>
            <spacer name="horizontalSpacer_8">
             <property name="orientation">
              <enum>Qt::Horizontal</enum>
             </property>
             <property name="sizeHint" stdset="0">
              <size>
               <width>40</width>
               <height>20</height>
              </size>
             </property>
            </spacer>
           </item>
          </layout>
         </item>
         <item row="1" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_20">
           <item>
            <widget class="QLabel" name="label_87">
             <property name="text">
              <string>运算方法：</string>
             </property>
            </widget>
           </item>
           <item>
            <layout class="QHBoxLayout" name="horizontalLayout_4">
             <item>
              <widget class="QCheckBox" name="checkBox_33">
               <property name="text">
                <string>加法</string>
               </property>
              </widget>
             </item>
             <item>
              <widget class="QCheckBox" name="checkBox_34">
               <property name="text">
                <string>减法</string>
               </property>
              </widget>
             </item>
             <item>
              <widget class="QCheckBox" name="checkBox_35">
               <property name="text">
                <string>乘法</string>
               </property>
              </widget>
             </item>
             <item>
              <widget class="QCheckBox" name="checkBox_36">
               <property name="text">
                <string>除法</string>
               </property>
              </widget>
             </item>
             <item>
              <spacer name="horizontalSpacer_9">
               <property name="orientation">
                <enum>Qt::Horizontal</enum>
               </property>
               <property name="sizeHint" stdset="0">
                <size>
                 <width>40</width>
                 <height>20</height>
                </size>
               </property>
              </spacer>
             </item>
            </layout>
           </item>
          </layout>
         </item>
         <item row="2" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_25">
           <item>
            <widget class="QLabel" name="label_92">
             <property name="text">
              <string>第一位数：</string>
             </property>
            </widget>
           </item>
           <item>
            <layout class="QHBoxLayout" name="horizontalLayout_24">
             <item>
              <layout class="QHBoxLayout" name="horizontalLayout_21">
               <item>
                <widget class="QLabel" name="label_91">
                 <property name="text">
                  <string>最大值：</string>
                 </property>
                </widget>
               </item>
               <item>
                <widget class="QSpinBox" name="spinBox_49"/>
               </item>
              </layout>
             </item>
             <item>
              <layout class="QHBoxLayout" name="horizontalLayout_22">
               <item>
                <widget class="QLabel" name="label_88">
                 <property name="text">
                  <string>最小值：</string>
                 </property>
                </widget>
               </item>
               <item>
                <widget class="QSpinBox" name="spinBox_50"/>
               </item>
              </layout>
             </item>
             <item>
              <layout class="QHBoxLayout" name="horizontalLayout_23">
               <item>
                <widget class="QLabel" name="label_94">
                 <property name="text">
                  <string>保留小数：</string>
                 </property>
                </widget>
               </item>
               <item>
                <widget class="QSpinBox" name="spinBox_53"/>
               </item>
               <item>
                <spacer name="horizontalSpacer_10">
                 <property name="orientation">
                  <enum>Qt::Horizontal</enum>
                 </property>
                 <property name="sizeHint" stdset="0">
                  <size>
                   <width>40</width>
                   <height>20</height>
                  </size>
                 </property>
                </spacer>
               </item>
              </layout>
             </item>
            </layout>
           </item>
          </layout>
         </item>
         <item row="3" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_29">
           <item>
            <widget class="QLabel" name="label_96">
             <property name="text">
              <string>第二位数：</string>
             </property>
            </widget>
           </item>
           <item>
            <layout class="QHBoxLayout" name="horizontalLayout_27">
             <item>
              <layout class="QHBoxLayout" name="horizontalLayout_26">
               <item>
                <widget class="QLabel" name="label_86">
                 <property name="text">
                  <string>最大值：</string>
                 </property>
                </widget>
               </item>
               <item>
                <widget class="QSpinBox" name="spinBox_51"/>
               </item>
              </layout>
             </item>
             <item>
              <widget class="QLabel" name="label_95">
               <property name="text">
                <string>最小值：</string>
               </property>
              </widget>
             </item>
             <item>
              <widget class="QSpinBox" name="spinBox_54"/>
             </item>
            </layout>
           </item>
           <item>
            <layout class="QHBoxLayout" name="horizontalLayout_28">
             <item>
              <widget class="QLabel" name="label_89">
               <property name="text">
                <string>保留小数：</string>
               </property>
              </widget>
             </item>
             <item>
              <widget class="QSpinBox" name="spinBox_52"/>
             </item>
             <item>
              <spacer name="horizontalSpacer_11">
               <property name="orientation">
                <enum>Qt::Horizontal</enum>
               </property>
               <property name="sizeHint" stdset="0">
                <size>
                 <width>40</width>
                 <height>20</height>
                </size>
               </property>
              </spacer>
             </item>
            </layout>
           </item>
          </layout>
         </item>
         <item row="4" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_30"/>
         </item>
         <item row="5" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_34">
           <item>
            <widget class="QLabel" name="label_93">
             <property name="text">
              <string>输出路径：</string>
             </property>
            </widget>
           </item>
           <item>
            <widget class="QLineEdit" name="lineEdit_8"/>
           </item>
           <item>
            <widget class="QPushButton" name="pushButton_8">
             <property name="text">
              <string>浏览</string>
             </property>
            </widget>
           </item>
          </layout>
         </item>
         <item row="6" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_31">
           <item>
            <spacer name="horizontalSpacer_12">
             <property name="orientation">
              <enum>Qt::Horizontal</enum>
             </property>
             <property name="sizeHint" stdset="0">
              <size>
               <width>40</width>
               <height>20</height>
              </size>
             </property>
            </spacer>
           </item>
           <item>
            <widget class="QPushButton" name="pushButton_2">
             <property name="text">
              <string>开始执行</string>
             </property>
            </widget>
           </item>
           <item>
            <spacer name="horizontalSpacer_13">
             <property name="orientation">
              <enum>Qt::Horizontal</enum>
             </property>
             <property name="sizeHint" stdset="0">
              <size>
               <width>40</width>
               <height>20</height>
              </size>
             </property>
            </spacer>
           </item>
          </layout>
         </item>
         <item row="7" column="0">
          <layout class="QHBoxLayout" name="horizontalLayout_32">
           <item>
            <widget class="QLabel" name="label_98">
             <property name="text">
              <string>日志输出：</string>
             </property>
            </widget>
           </item>
           <item>
            <spacer name="horizontalSpacer_14">
             <property name="orientation">
              <enum>Qt::Horizontal</enum>
             </property>
             <property name="sizeHint" stdset="0">
              <size>
               <width>40</width>
               <height>20</height>
              </size>
             </property>
            </spacer>
           </item>
          </layout>
         </item>
         <item row="8" column="0">
          <widget class="QTextEdit" name="textEdit_2"/>
         </item>
        </layout>
       </widget>
      </widget>
     </widget>
    </item>
   </layout>
  </widget>
  <widget class="QStatusBar" name="statusbar"/>
  <widget class="QMenuBar" name="menubar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>846</width>
     <height>23</height>
    </rect>
   </property>
   <widget class="QMenu" name="menu">
    <property name="title">
     <string>设置</string>
    </property>
    <addaction name="actionpeiz_wj"/>
    <addaction name="actionguanyu"/>
   </widget>
   <addaction name="menu"/>
  </widget>
  <action name="actionpeiz_wj">
   <property name="text">
    <string>配置文件</string>
   </property>
  </action>
  <action name="actionguanyu">
   <property name="text">
    <string>关于</string>
   </property>
  </action>
 </widget>
 <resources/>
 <connections/>
</ui>

login_ui.py 文件

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

# Form implementation generated from reading ui file 'login_ui.ui'
#
# Created by: PyQt5 UI code generator 5.15.9
#
# 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(819, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.widget = QtWidgets.QWidget(self.centralwidget)
        self.widget.setGeometry(QtCore.QRect(30, 120, 751, 271))
        self.widget.setObjectName("widget")
        self.horizontalLayout_4 = QtWidgets.QHBoxLayout(self.widget)
        self.horizontalLayout_4.setContentsMargins(0, 0, 0, 0)
        self.horizontalLayout_4.setObjectName("horizontalLayout_4")
        self.verticalLayout = QtWidgets.QVBoxLayout()
        self.verticalLayout.setObjectName("verticalLayout")
        self.horizontalLayout = QtWidgets.QHBoxLayout()
        self.horizontalLayout.setObjectName("horizontalLayout")
        self.label = QtWidgets.QLabel(self.widget)
        self.label.setObjectName("label")
        self.horizontalLayout.addWidget(self.label)
        self.lineEdit = QtWidgets.QLineEdit(self.widget)
        self.lineEdit.setObjectName("lineEdit")
        self.horizontalLayout.addWidget(self.lineEdit)
        self.verticalLayout.addLayout(self.horizontalLayout)
        self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
        self.label_2 = QtWidgets.QLabel(self.widget)
        self.label_2.setObjectName("label_2")
        self.horizontalLayout_2.addWidget(self.label_2)
        self.lineEdit_2 = QtWidgets.QLineEdit(self.widget)
        self.lineEdit_2.setObjectName("lineEdit_2")
        self.horizontalLayout_2.addWidget(self.lineEdit_2)
        self.verticalLayout.addLayout(self.horizontalLayout_2)
        self.horizontalLayout_3 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_3.setObjectName("horizontalLayout_3")
        self.pushButton = QtWidgets.QPushButton(self.widget)
        self.pushButton.setObjectName("pushButton")
        self.horizontalLayout_3.addWidget(self.pushButton)
        self.pushButton_2 = QtWidgets.QPushButton(self.widget)
        self.pushButton_2.setObjectName("pushButton_2")
        self.horizontalLayout_3.addWidget(self.pushButton_2)
        self.verticalLayout.addLayout(self.horizontalLayout_3)
        self.horizontalLayout_4.addLayout(self.verticalLayout)
        self.textEdit = QtWidgets.QTextEdit(self.widget)
        self.textEdit.setObjectName("textEdit")
        self.horizontalLayout_4.addWidget(self.textEdit)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 819, 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", "账号："))
        self.label_2.setText(_translate("MainWindow", "密码："))
        self.pushButton.setText(_translate("MainWindow", "登录"))
        self.pushButton_2.setText(_translate("MainWindow", "忘记密码？"))