命名元组

4 条带有 namedtuples 标签的Python 类型规范规则。

• namedtuples_define_class NamedTuple class definition errors
• namedtuples_define_functional Invalid argument in a NamedTuple constructor call
• namedtuples_type_compat NamedTuple-to-tuple type incompatibility
• namedtuples_usage NamedTuple usage violations