#4974: [with patch, needs work] make sage.libs.pari.gen._normalize_slice a
miscellaneous function for dealing with slices
--------------------+-------------------------------------------------------
Reporter: jason | Owner: craigcitro
Type: defect | Status: assigned
Priority: major | Milestone: sage-3.3
Component: misc | Resolution:
Keywords: |
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Changes (by craigcitro):
* summary: [with patch, needs review] make
sage.libs.pari.gen._normalize_slice a
miscellaneous function for dealing with slices
=> [with patch, needs work] make
sage.libs.pari.gen._normalize_slice a
miscellaneous function for dealing with slices
Comment:
Jason Grout just brought up an example in IRC where exactly that would
happen. Here's a case:
{{{
sage: range(3)[2::-1]
[2, 1, 0]
}}}
`normalize_slice` will '''not''' return that, since it interprets a
missing `stop` to be equal to `size`. This isn't documented as part of the
Python semantics, but I think we should switch it to behave the same way
regardless. (Also, it'll be easy to implement.)
This is now `needs work` until I change this.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4974#comment:7>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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