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Author Antony.Lee
Recipients Antony.Lee
Date 2017-07-24.09:07:46
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Marked as misclassified Yes
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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.
Date User Action Args
2017-07-24 09:07:47Antony.Leesetrecipients: + Antony.Lee
2017-07-24 09:07:47Antony.Leesetmessageid: <>
2017-07-24 09:07:47Antony.Leelinkissue31006 messages
2017-07-24 09:07:46Antony.Leecreate