[Python-Dev] method decorators (PEP 318) (original) (raw)

Guido van Rossum guido at python.org
Fri Mar 26 13:47:04 EST 2004

It appears to be a surprisingly important detail.

I'm anal about trying to find the optimal syntax given incompatible constraints.

Tossing out another idea:

foobar: author = "Guido van Rossum" deprecated = True def foobar(self, arg): pass The declaration block must be followed immediately by a class or def statement. It looks elegant to me.

The current parser can't deal with "NAME ':'" as a syntax rule, because expressions also start with NAME.

I also don't like that you have to repeat the function name.

And this would hide the "important" decorators (e.g. classmethod) amongst a large collection of metadata (unless you want to combine this with the "def foo [classmethod] (cls, a, b, c):" syntax.

--Guido van Rossum (home page: http://www.python.org/~guido/)

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