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_())

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