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QTableWidget の指定列をReadOnly にするStyledItemDelegate

備忘録かつ添削をお願いしたく投稿します。
C++の例を書き換えたStyledItemDelegateを書いてみました。
ReadOnlyStyledItemDelegateです。

ReadOnlyStyledItemDelegate.py
from PySide2.QtWidgets import QStyledItemDelegate

class ReadOnlyStyledItemDelegate(QStyledItemDelegate):
    def __init__(self, parent=None):
        super().__init__(parent)

    def createEditor(self, parent, option, index):
        return None

特定列更新不可は実務的には必要な機能だろうと思います。
C++の例がnull返しなのだから、Noneで良いのでは?という程度の理解で書いてます。
createできないのだからdelegateが実装すべき後の機能は親任せで良いだろうということで、createEditorのみです。

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