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

先查看链接的 PR gh-149348，然后检查报告中链接的 glossary mapping 条目以及 collections.abc.Mapping 和 collections.abc.MutableMapping 文档。更新文档，使其描述必需的 mapping 方法，同时避免两个条目相互循环引用。