In Python 2.x, names outside the local scope are wholly inaccessible except by passing them in, unless they happen to be in the global scope. I have a class that has a couple of read-only/constant ...

No descriptor protocol: No property, method binding, or magic getters/setters—just pure dict lookups. Access class and instance dicts: Traverse instance, then all classes in MRO (method resolution ...

原文：https://www.blog.pythonlibrary.org/2021/11/10/how-to-add-list-attribute-append-updates-to-a-class-in-python/ I had a use-case where I needed to create a ...