Issue 1441408: svn head compiler fails to spot extended slicing (original) (raw)

Issue1441408

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classification

Title:	svn head compiler fails to spot extended slicing
Type:	Stage:
Components:	Interpreter Core	Versions:

process

Status:	closed	Resolution:	fixed
Dependencies:		Superseder:
Assigned To:		Nosy List:	logistix, mwh, ncoghlan
Priority:	normal	Keywords:

Created on 2006-03-02 01:20 by mwh, last changed 2022-04-11 14:56 by admin. This issue is now closed.

Messages (5)
msg27641 - (view)	Author: Michael Hudson (mwh)	Date: 2006-03-02 01:20
This is Python SVN HEAD: >>> dis.dis(compile("x[::]", '', 'single')) 1 0 LOAD_NAME 0 (x) 3 SLICE+0 4 PRINT_EXPR 5 LOAD_CONST 0 (None) 8 RETURN_VALUE This is Python 2.4: >>> dis.dis(compile("x[::]", '', 'single')) 1 0 LOAD_NAME 0 (x) 3 LOAD_CONST 0 (None) 6 LOAD_CONST 0 (None) 9 LOAD_CONST 0 (None) 12 BUILD_SLICE 3 15 BINARY_SUBSCR 16 PRINT_EXPR 17 LOAD_CONST 0 (None) 20 RETURN_VALUE
msg27642 - (view)	Author: Grant Olson (logistix)	Date: 2006-03-05 23:33
Logged In: YES user_id=699438 This only happens when you have implicit slice values. x[1:2:3] works fine. I'm finishing up a patch and will post to sf shortly.
msg27643 - (view)	Author: Grant Olson (logistix)	Date: 2006-03-10 00:22
Logged In: YES user_id=699438 Patch 1446847 Posted.
msg27644 - (view)	Author: Alyssa Coghlan (ncoghlan) *	Date: 2006-03-17 13:45
Logged In: YES user_id=1038590 Alternate patch that doesn't modify the AST posted as 1452332
msg27645 - (view)	Author: Alyssa Coghlan (ncoghlan) *	Date: 2006-03-17 18:04
Logged In: YES user_id=1038590 Applied 1452332 to SVN (generates an explicit None reference for the step when the second colon is present but no expressions is supplied for the step)