New submission from Antony Lee: Currently, the fields, types and defaults used to define a typing.NamedTuple need to be retrieved from three different attributes: `_fields`, `_field_types`, and `_field_defaults` (the first two are combined in `__annotations__`, but that still misses the defaults).
However, there is a place where all this information can be naturally combined: in the Signature of the constructor (as returned by `inspect.signature(cls)`). Currently, the Parameter objects in the signature have the information about the parameter names and defaults, but their annotation is not set. Thus, I would like to propose setting the annotation of the Parameters in the Signature object as well. ---------- components: Library (Lib) messages: 298937 nosy: Antony.Lee priority: normal severity: normal status: open title: typing.NamedTuple should add annotations to its constructor (__new__) parameters. versions: Python 3.6 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue31006> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
