On 12/27/11 11:02 PM, roze...@volny.cz wrote:
Hallo,
I have kind of special question when extening python with C++
implemented modules.
I try to implement a class, behaving also like an array. And I need
to implement slice-getters. I implemented PySequenceMethods.sq_slice
to get "simple" slices like:
myobj[x:y]
It works perfectly, without problems. But now I have a problem when
need to access the array with "special" slices, like:
myobj[x:y:step]
myobj[::-1] # to revert the array
I would like to ask which method must be implemented to get this
"special" slice getters. The "simple" slice
PySequenceMethods.sq_slice getter accepts only two indexes - from,
to, but not a step (which would solve the issue).
The sq_slice slot is deprecated, just like the __getslice__() method on the
Python side. Instead, implement sq_item to accept a slice object in addition to
integer indices.
http://docs.python.org/c-api/slice.html
--
Robert Kern
"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco
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