PYQT5实现控制台显示功能的方法

界面文件 Ui_ControlBoard.py

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

# Form implementation generated from reading ui file 'Ui_ControlBoard.ui'
#
# Created by: PyQt5 UI code generator 5.11.3
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtWidgets

class Ui_MainWindow(object):
 def setupUi(self, MainWindow):
   MainWindow.setObjectName("MainWindow")
   MainWindow.resize(800, 600)
   self.centralwidget = QtWidgets.QWidget(MainWindow)
   self.centralwidget.setObjectName("centralwidget")
   self.textBrowser = QtWidgets.QTextBrowser(self.centralwidget)
   self.textBrowser.setGeometry(QtCore.QRect(50, 180, 591, 171))
   self.textBrowser.setObjectName("textBrowser")
   self.pushButton = QtWidgets.QPushButton(self.centralwidget)
   self.pushButton.setGeometry(QtCore.QRect(450, 390, 93, 28))
   self.pushButton.setObjectName("pushButton")
   MainWindow.setCentralWidget(self.centralwidget)
   self.menubar = QtWidgets.QMenuBar(MainWindow)
   self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 26))
   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.pushButton.setText(_translate("MainWindow", "PushButton"))

逻辑文件 Call_ControlBoard.py

版本一

#!/usr/bin/env python3
# -*- coding:utf-8 -*-
from PyQt5 import QtCore, QtGui
import sys
from PyQt5.QtCore import QEventLoop, QTimer
from PyQt5.QtWidgets import QApplication, QMainWindow

from Ui_ControlBoard import Ui_MainWindow

class EmittingStr(QtCore.QObject):
   textWritten = QtCore.pyqtSignal(str) #定义一个发送str的信号
   def write(self, text):
     self.textWritten.emit(str(text))

class ControlBoard(QMainWindow, Ui_MainWindow):
 def __init__(self):
   super(ControlBoard, self).__init__()
   self.setupUi(self)
   # 下面将输出重定向到textBrowser中
   sys.stdout = EmittingStr(textWritten=self.outputWritten)
   sys.stderr = EmittingStr(textWritten=self.outputWritten)

self.pushButton.clicked.connect(self.bClicked)

def outputWritten(self, text):
   cursor = self.textBrowser.textCursor()
   cursor.movePosition(QtGui.QTextCursor.End)
   cursor.insertText(text)
   self.textBrowser.setTextCursor(cursor)
   self.textBrowser.ensureCursorVisible()

def bClicked(self):
   """Runs the main function."""
   print('Begin')
   loop = QEventLoop()
   QTimer.singleShot(1000, loop.quit)
   loop.exec_()
   self.printABCD()
   loop = QEventLoop()
   QTimer.singleShot(1000, loop.quit)
   loop.exec_()
   print("End")

def printABCD(self):
   print("aaaaaaaaaaaaaaaa")
   print("bbbbbbbbbbbbbbbb")
   print("cccccccccccccccc")
   print("dddddddddddddddd")

if __name__ == "__main__":
 app = QApplication(sys.argv)
 win = ControlBoard()
 win.show()
 sys.exit(app.exec_())

版本二

#!/usr/bin/env python3
# -*- coding:utf-8 -*-
from PyQt5 import QtCore, QtGui
import sys
from PyQt5.QtCore import QEventLoop, QTimer
from PyQt5.QtWidgets import QApplication, QMainWindow

from Ui_ControlBoard import Ui_MainWindow

class EmittingStr(QtCore.QObject):
   textWritten = QtCore.pyqtSignal(str) #定义一个发送str的信号
   def write(self, text):
     self.textWritten.emit(str(text))
     loop = QEventLoop()
     QTimer.singleShot(1000, loop.quit)
     loop.exec_()

class ControlBoard(QMainWindow, Ui_MainWindow):
 def __init__(self):
   super(ControlBoard, self).__init__()
   self.setupUi(self)
   # 下面将输出重定向到textBrowser中
   sys.stdout = EmittingStr(textWritten=self.outputWritten)
   sys.stderr = EmittingStr(textWritten=self.outputWritten)

self.pushButton.clicked.connect(self.bClicked)

def outputWritten(self, text):
   cursor = self.textBrowser.textCursor()
   cursor.movePosition(QtGui.QTextCursor.End)
   cursor.insertText(text)
   self.textBrowser.setTextCursor(cursor)
   self.textBrowser.ensureCursorVisible()

def bClicked(self):
   """Runs the main function."""
   print('Begin')

self.printABCD()

print("End")

def printABCD(self):
   print("aaaaaaaaaaaaaaaa")
   print("bbbbbbbbbbbbbbbb")
   print("cccccccccccccccc")
   print("dddddddddddddddd")

if __name__ == "__main__":
 app = QApplication(sys.argv)
 win = ControlBoard()
 win.show()
 sys.exit(app.exec_())

版本三

#!/usr/bin/env python3
# -*- coding:utf-8 -*-
from PyQt5 import QtCore, QtGui
import sys
from PyQt5.QtCore import QEventLoop, QTimer
from PyQt5.QtWidgets import QApplication, QMainWindow

from Ui_ControlBoard import Ui_MainWindow

class EmittingStr(QtCore.QObject):
   textWritten = QtCore.pyqtSignal(str) #定义一个发送str的信号
   def write(self, text):
     self.textWritten.emit(str(text))

class ControlBoard(QMainWindow, Ui_MainWindow):
 def __init__(self):
   super(ControlBoard, self).__init__()
   self.setupUi(self)
   # 下面将输出重定向到textBrowser中
   sys.stdout = EmittingStr(textWritten=self.outputWritten)
   sys.stderr = EmittingStr(textWritten=self.outputWritten)

self.pushButton.clicked.connect(self.bClicked)

def outputWritten(self, text):
   cursor = self.textBrowser.textCursor()
   cursor.movePosition(QtGui.QTextCursor.End)
   cursor.insertText(text)
   self.textBrowser.setTextCursor(cursor)
   self.textBrowser.ensureCursorVisible()

def bClicked(self):
   """Runs the main function."""
   print('Begin')

self.printABCD()

print("End")

def printABCD(self):
   print("aaaaaaaaaaaaaaaa")
   print("bbbbbbbbbbbbbbbb")
   print("cccccccccccccccc")
   print("dddddddddddddddd")

if __name__ == "__main__":
 app = QApplication(sys.argv)
 win = ControlBoard()
 win.show()
 sys.exit(app.exec_())

来源：https://blog.csdn.net/william_munch/article/details/89425038