On 05/23/2013 03:20 PM, Neil Cerutti wrote:
On 2013-05-23, Matthew Gilson <m.gils...@gmail.com> wrote:
That's fine, but what is a keyword argument?  According to the glossary
(http://docs.python.org/3.3/glossary.html):

/"keyword argument/: an argument preceded by an identifier (e.g. name=)
in a function call or passed as a value in a dictionary preceded by **."

As far as I'm concerned, this leads to some ambiguity in
whether the keys of the mapping need to be valid identifiers or
not.
I don't see any ambiguity. A keyword argument is an argument
preceded by an identifier according to the definition. Where are
you perceiving wiggle room?

The wiggle room comes from the "or passed as a value in a dictionary" clause. We sort of get caught in a infinite loop there because the stuff that can be passed in a dictionary is a keyword which is an identifer=expression or something passed as a value in a dictionary ...

Also the fact that:

     func(**{"foo bar baz":1})

works even though `foo bar baz` isn't a valid identifier, but:

     func(**{1:3})

doesn't work.
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