python：语法糖-是官方的吗？ 文档在哪里描述？

Question

I often see notes that eg [] is syntactic sugar for _getitem_ ( Why/How does Pandas use square brackets with .loc and .iloc? ), but neither by web search, not here on SO, not in glossary in docs.python.org I could find list of all sugars for Python. Are sugars official or left to each implementation specifics?

Answer 1

It's documented in the Python data model documentation . It's not exactly synthetic sugar, and more of an implementation detail of how container types work. Python has lots of these so-called "magic methods"