GUI界面实时显示控制台输出

将cmd的输出（如下图），实时传到GUI界面进行输出：

效果展示：

代码：

from time import sleep
from PyQt5 import QtCore, QtGui, QtWidgets
import sys
import qtawesome
from PyQt5.QtCore import QObject, pyqtSignal, QEventLoop, QTimer, QThread, QTime
from PyQt5.QtGui import QTextCursor
from PyQt5.QtWidgets import QTextEdit

class MainUi(QtWidgets.QMainWindow):
    def __init__(self):
        super().__init__()
        self.init_ui()
        self.th = MyThread()
        self.th.signalForText.connect(self.onUpdateText)
        sys.stdout = self.th

    def onUpdateText(self,text):
        cursor = self.process.textCursor()
        cursor.movePosition(QTextCursor.End)
        cursor.insertText(text)
        self.process.setTextCursor(cursor)
        self.process.ensureCursorVisible()

    def init_ui(self):
        self.setFixedSize(800, 400)
        self.main_widget = QtWidgets.QWidget()  # 创建窗口主部件
        self.main_layout = QtWidgets.QGridLayout()  # 创建主部件的网格布局
        self.main_widget.setLayout(self.main_layout)  # 设置窗口主部件布局为网格布局

        self.widget = QtWidgets.QWidget()  
        self.widget.setObjectName('widget')
        self.layout = QtWidgets.QGridLayout()
        self.widget.setLayout(self.layout)  # 设置部件布局为网格

        self.main_layout.addWidget(self.widget, 0, 2, 12, 10)  
        self.setCentralWidget(self.main_widget)  # 设置窗口主部件
        
        self.bar_widget = QtWidgets.QWidget()  # 顶部搜索框部件
        self.bar_layout = QtWidgets.QGridLayout()  # 顶部搜索框网格布局
        self.bar_widget.setLayout(self.bar_layout)
        self.search_button = QtWidgets.QPushButton(qtawesome.icon('fa.comment', color='red'), "搜索")
        self.search_button.clicked.connect(self.genMastClicked)
        self.search_button.setObjectName('button')
        self.search_button.setFont(qtawesome.font('fa', 16))
        self.bar_widget_search_input = QtWidgets.QLineEdit()  # 搜索框
        self.bar_widget_search_input.setPlaceholderText("输入搜索内容")

        self.bar_layout.addWidget(self.search_button, 0, 0, 1, 1)
        self.bar_layout.addWidget(self.bar_widget_search_input, 0, 1, 1, 8)

        self.layout.addWidget(self.bar_widget, 0, 0, 1, 9)

        self.recommend_label = QtWidgets.QLabel("进程显示：")
        self.recommend_label.setObjectName('lable')

        self.recommend_widget = QtWidgets.QWidget()
        self.recommend_layout = QtWidgets.QGridLayout()
        self.recommend_widget.setLayout(self.recommend_layout)

        self.process = QTextEdit(self, readOnly=True)
        self.process.ensureCursorVisible()
        self.process.setLineWrapColumnOrWidth(800)
        self.process.setLineWrapMode(QTextEdit.FixedPixelWidth)
        self.process.setFixedWidth(500)
        self.process.setFixedHeight(250)
        self.process.move(30, 50)

        self.recommend_layout.addWidget(self.process, 0, 1)
        self.layout.addWidget(self.recommend_label, 1, 0, 1, 9)
        self.layout.addWidget(self.recommend_widget, 2, 0, 2, 9)

        #使用QSS和部件属性美化窗口部件
        self.bar_widget_search_input.setStyleSheet(
            '''QLineEdit{
                    border:1px solid gray;
                    width:300px;
                    border-radius:10px;
                    padding:2px 4px;
            }''')
        self.widget.setStyleSheet('''
            QWidget#widget{
                color:#232C51;
                background:white;
                border-top:1px solid darkGray;
                border-bottom:1px solid darkGray;
                border-right:1px solid darkGray;
            }
            QLabel#lable{
                border:none;
                font-size:16px;
                font-weight:700;
                font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
            }
            QPushButton#button:hover{border-left:4px solid red;font-weight:700;}
        ''')

    def search(self):
        try:
            self.t = MyThread()
            self.t.start()
        except Exception as e:
            raise e

    def genMastClicked(self):
        """Runs the main function."""
        print('Running...')
        self.search()

        loop = QEventLoop()
        QTimer.singleShot(2000, loop.quit)
        loop.exec_()

    def closeEvent(self, event):
        """Shuts down application on close."""
        # Return stdout to defaults.
        sys.stdout = sys.__stdout__
        super().closeEvent(event)

QThread用来实现多线程

class MyThread(QThread):
    signalForText = pyqtSignal(str)

    def __init__(self,data=None, parent=None):
        super(MyThread, self).__init__(parent)
        self.data = data

    def write(self, text):
        self.signalForText.emit(str(text))  # 发射信号

    def run(self):
        # 演示代码
        for i in range(5):
            print(i)
            sleep(1)
        print("End")

最后主函数启动

def main():
    app = QtWidgets.QApplication(sys.argv)
    app.aboutToQuit.connect(app.deleteLater)
    gui = MainUi()
    gui.show()

    sys.exit(app.exec_())


if __name__ == '__main__':
    main()