[Python-3000] Draft pre-PEP: function annotations (original) (raw)

Paul Prescod paul at prescod.net
Tue Aug 15 00:48:33 CEST 2006

On 8/14/06, Collin Winter <collinw at gmail.com> wrote:

Because not having standardised meanings at the same time as the feature becomes available says to developers, "don't use the built-in types in your annotations because we might give them a meaning later...or maybe we won't...but in the meantime, you're going to need to invent new spellings for lists, tuples, dicts, sets, strings, just in case". As someone writing an annotation consumer, that comes across as an incredibly arbitrary decision that forces me to do a lot of extra work.

No, you aren't going to have to invent new spellings. As per my previous email, this should be allowed:

def myfunc( NumTuples: [typepackage1(tuple(int)), typepackage2("tuple(Number+))")]):...

All you need to do is declare the fact that you are using the built-in types in a non-standard way by wrapping them in your own annotation constructor.

Paul Prescod -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.python.org/pipermail/python-3000/attachments/20060814/206991d8/attachment.html

More information about the Python-3000 mailing list