Issue 932100: Implementation for PEP 318 ([as classmethod] version) (original) (raw)

This patch implements the alternative PEP 318 syntax that I suggested on python-dev a few days ago:

   [as classmethod]
   def func(args):
   ...

List comprehensions are not allowed, nor are empty lists. The newline is optional (e.g. "[as xxx] def foo" is handled).

Two substantive changes: a moderately nasty hack to tokeniser.c to transform LSQB "as" NAME (with optional interspersed whitespace and comments) into LSQB_AS NAME, and a change to Grammar from:

 funcdef: 'def' NAME parameters ':' suite

to:

decorators: LSQB_AS test (',' test)* [','] ']'

[NEWLINE] funcdef: [decorators] 'def' NAME parameters ':' suite

plus corresponding changes to compile.c and various other files to track the change.

Also included is an updated version of Guido's test_decorators.py. The rest of the test suite passes (apart from two tests which were fail independently of this change).