[PyQt] Why lineEdit is showing text like this ??

[alandmoore]

I was of the impression that this should not be necessary in Python 3. Can you explain why it should be done?

I did not wrote it. In my code I wrote

class lineEdit(QtWidgets.QLineEdit):
     def __init__(self, parent):
        super().__init__(parent)  

My mistake, I was replying to Denni's response. I'm not clear why one should still do the older method in Python 3.