Circular dependency between `mapping` term `collections.abc.Mapping`

Documentation

The mapping (1) glossary term is defined as

A container object that supports arbitrary key lookups and implements the methods specified in the collections.abc.Mapping or collections.abc.MutableMapping abstract base classes. Examples include dict, collections.defaultdict, and collections.Counter.

Whereas for example collections.abc.Mapping(2) and collections.abc.MutableMapping(2) have the documentation:

ABCs for read-only and mutable mappings.

I expected either the documentation on a mapping or the documentation on the ABC's to describe or link to what methods a (mutable) mapping implements. Now they refer to each other in a circle for the actual specification of what methods are required.

1: https://docs.python.org/3/glossary.html#term-mapping
2: https://docs.python.org/3/library/collections.abc.html#collections.abc.Mapping

Linked PRs

• gh-149348

先查看連結的 PR gh-149348，然後檢查報告中連結的 glossary mapping 項目，以及 collections.abc.Mapping 和 collections.abc.MutableMapping 文件。更新文件，描述必要的 mapping 方法，同時避免兩個項目彼此循環參照。