Bugs item #1441408, was opened at 2006-03-02 11:20
Message generated for change (Comment added) made by ncoghlan
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Category: Parser/Compiler
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Michael Hudson (mwh)
Assigned to: Nobody/Anonymous (nobody)
Summary: svn head compiler fails to spot extended slicing
Initial Comment:
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
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>Comment By: Nick Coghlan (ncoghlan)
Date: 2006-03-18 04:04
Message:
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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)
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Comment By: Nick Coghlan (ncoghlan)
Date: 2006-03-17 23:45
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Alternate patch that doesn't modify the AST posted as 1452332
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Comment By: Grant Olson (logistix)
Date: 2006-03-10 10:22
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Patch 1446847 Posted.
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Comment By: Grant Olson (logistix)
Date: 2006-03-06 09:33
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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.
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