Star Delegate Example error in python 3.7

alom

I've set up the star delegate example, with runs fine under python 2.7 but under 3.7 running into:

Traceback (most recent call last):
  File "Z:\repos\qtPlayGround\QStyledItemDelegate_Start_Example\starEditor.py", line 25, in sizeHint
    return self.starRating.sizeHint()
AttributeError: 'StarEditor' object has no attribute 'starRating'

I saw that Python 3 only has new-style classes but is there something that needs to change in the StarEditor class? I'm a bit lost as everything looks fine.

Cheers

start delegate files:
https://doc.qt.io/qtforpython/pyside-examples/pyside2examples-widgets-itemviews-stardelegate-example.html#pyside2-qtwidgets-star-delegate-example

SGaist

Hi,

How are you running the code exactly ?

I see where the issue is but I'd like to know how you trigger it.

alom

@SGaist
I just have the three files in a pycharm project and running the stardelegate.py file.
The error pop up once I enter the edit state of the star cell

SGaist

Then something else must be off.

In any case, add

from starrating import StarRating

Before the the StarEditor class declaration and then

self.starRating = StarRating()

in its constructor.

A fix to the example has been submitted.

alom

@SGaist
Thanks! working.
Any idea why python 2.7 wasn't throwing this error?

SGaist

No I don't.

I checked with with Python 3.7.6 and the example runs without my change because of how python works and the sequence of actions that will trigger the use of that attribute. The starRating attribute should have been set prior to being used in any case so there might be something different on your system but I don't know what it is.