Install latest PySide6_Essentials (6.8.0.1) from pip, and using QTextLayout.FormatRange such as:

from PySide6.QtGui import (
    QTextCharFormat,
    QTextOption
)
from PySide6.QtGui import *
from PySide6.QtCore import *


if __name__ == '__main__':
    print(QTextLayout.FormatRange()) 

When running, it failed with 'PySide6.QtGui.QTextLayout' has no attribute 'FormatRange' exception.

It seems that 6.8 removed `FormatRange`? As 6.7.3 still works.