[FIXED] Replace all tab operations with inserting four spaces in QPlainTextEdit widget

Issue

I've got a QPlainTextEdit object which I'm using as a mini-python editor in one of my tools. The problem is that when you insert a tab in QPlainTextEdit, it inserts a great big tab rather than four spaces like I'd prefer.

Is there a way to override this functionality, like you can in programs like Notepad++?

Solution

Use the setTabStopWidth(width) method to change how much space one tab takes. It takes width in pixels. The default is 80.

If you need to replace all the tabs with four spaces, you can get the string from qtextedit and then replace them

s= text_edit.toPlainText()
s= s.replace('\t', '    ')

Changing tab width in QTextEdit:

from PyQt5.QtWidgets import *
import sys

class Wind(QWidget):
    def __init__(self):
        super().__init__()
        self.setupUI()

    def setupUI(self):
        self.setGeometry(300,300, 300,500)
        self.show()

        vb_layout= QVBoxLayout(self)

        text_edit= QTextEdit(self)

        # This method sets tab width in pixels
        text_edit.setTabStopWidth(8)

        vb_layout.addWidget(text_edit)
        self.setLayout(vb_layout)

def main():
    app= QApplication(sys.argv)
    w = Wind()
    exit(app.exec_())


if __name__ == '__main__':
    main()

Answered By - Anonta