[FIXED] PyQt equal length strings with whitespaces have different display length

Issue

In PyQt5, I found that equal length strings with whitespaces have different final display length:

while the desired output should be like:

123456789
1 3456789
1  456789
1   56789

I found this issue not only exists in QComboBox, but also in other multi-row widgets. Fixing length, such as {:15s}, also cause the issue.

Is there a way to display as the desired output?

A minimal example of the described issue:

from PyQt5.QtWidgets import QApplication, QComboBox, QMainWindow
import sys

class Window(QMainWindow):
    def __init__(self): 
        super().__init__() 
        self.combo_box = QComboBox(self)
        a = ["123456789", "1 3456789", "1  456789", "1   56789"]
        self.combo_box.addItems(a)
        self.show()

App = QApplication(sys.argv) 
window = Window()
sys.exit(App.exec())

Solution

The misalignment is caused by the font as it doesn't give you the same space between the letters and the spaces. The solution is to use a font like "monospace":

from PyQt5.QtGui import QFont

font = QFont("monospace")
self.combo_box.setFont(font)

Answered By - eyllanesc