[Python] QStyledItemDelegate on QTreeWidget crashes my application

I'm trying have some words in my QTreeWidget items to be bold. After some research, I saw a solution using a QStyledItemDelegate to use html formating on my tree items--It works but it is super unstable and keeps crashing my application.

It doesn't give me an error message except for : process is terminated with return code 3221225477.

Here's the delegate I'm testing atm :

class HtmlDelegate(QStyledItemDelegate):

def paint(self, painter, option, index):
# Skipping to retain category headers
if not index.parent().isValid():
super().paint(painter, option, index)
return

painter.save()

text = index.data()

doc = QTextDocument()
doc.setHtml(f"<p style='color: rgb(125, 251, 182);'>{text}</p>")
doc.setTextWidth(option.rect.width())

painter.translate(option.rect.topLeft())
doc.drawContents(painter)

painter.restore()

def sizeHint(self, option, index):

text = index.data()

doc = QTextDocument()
doc.setHtml(f"<p>{text}</p>")
doc.setTextWidth(option.rect.width())

return doc.size().toSize()


Thank you!

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