[Patches] [ python-Patches-1607548 ] Optional Argument Syntax

[SourceForge.net]

Patches item #1607548, was opened at 2006-12-02 20:53
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=305470&aid=1607548&group_id=5470

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Core (C code)
Group: Python 3000
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Tony Lownds (tonylownds)
Assigned to: Nobody/Anonymous (nobody)
Summary: Optional Argument Syntax

Initial Comment:
This patch implements optional argument syntax for Python 3000. The patch still has issues; I am posting so that Collin Winters can add a link to the PEP.

The syntax implemented is roughly:

def f(arg:expr, (nested1:expr, nested2:expr)) -> expr:
  suite

The function object has a new attribute, func_annotations that maps from argument names to the result of the expression. The return annotation is stored with a key of 'return'.

Lambda's syntax doesn't support annotations.

This patch alters the MAKE_FUNCTION opcode. I have an implementation that built the func_annotations dictionary in bytecode as well but it was bigger and slower.


----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=305470&aid=1607548&group_id=5470