Python PyQt5 All text in QTextBrowser becomes 'hyperactive'

Question

I have a problem with text in QTextBrowser. I have a similar code:

from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *

class MainWindow(QMainWindow):

    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        centralWidget = QWidget()
        self.setCentralWidget(centralWidget)
        self.textBox = QTextBrowser(centralWidget)

        self.textBox.setOpenExternalLinks(True)

        self.button = QPushButton(centralWidget)
        self.button.setText("PUSH")
        self.button.clicked.connect(self.pressed)

        self.grid = QGridLayout(centralWidget)
        self.grid.addWidget(self.button)
        self.grid.addWidget(self.textBox)

    def pressed(self):
        id = 49309034
        url_name = "test_link"
        link = '<a href = https://stackoverflow.com/questions/{0}> {1} </a>'.format(id, url_name)
        dict = {'Key': 'Value', link: 'Test link'}
        for key, value in dict.items():
            self.textBox.append('{0}: {1}'.format(key, value))
        self.textBox.append("")


if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec_())

So, when I push button I get:

However, if I click on the link and then push button again - all text becomes 'hyperactive':

I think, the problem is in 'next line'. Because I've tried such code and it's working properly:

string = ""
for key, value in dict.items():
    string += '{0}: {1}'.format(key, value) + '; '
self.textBox.append(string)

After I've clicked on the URL and pushed button

Can you help me figure this out?

What do you mean by all text becomes 'hyperactive'. Only 'test link' is being displayed as hyperlink. — Deepanshu, Nov 21 '19 at 08:34

S. Nick · Accepted Answer · 2019-11-21T18:07:08.630

Try moving the cursor before adding lines to QTextBrowser. For example, like this:

self.textBox.moveCursor(QTextCursor.Start)

from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *

class MainWindow(QMainWindow):

    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        centralWidget = QWidget()
        self.setCentralWidget(centralWidget)
        self.textBox = QTextBrowser(centralWidget)

        self.textBox.setOpenExternalLinks(True)

        self.button = QPushButton(centralWidget)
        self.button.setText("PUSH")
        self.button.clicked.connect(self.pressed)

        self.grid = QGridLayout(centralWidget)
        self.grid.addWidget(self.button)
        self.grid.addWidget(self.textBox)

    def pressed(self):

        self.textBox.moveCursor(QTextCursor.Start)       # <---

        id = 49309034
        url_name = "test_link"
        link = '<a href = https://stackoverflow.com/questions/{0}> {1} </a>'.format(id, url_name)
        dict = {'Key': 'Value', link: 'Test link'}
        for key, value in dict.items():
            self.textBox.append('{0}: {1}'.format(key, value))
        self.textBox.append("")


if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec_())

Thank you so much! I was thinking about this problem for so long. — Roman Reznikov, Nov 21 '19 at 15:20
is more readable: `self.textBox.moveCursor(QTextCursor.Start)` — eyllanesc, Nov 21 '19 at 17:58

Python PyQt5 All text in QTextBrowser becomes 'hyperactive'

1 Answers1