The slice operator does not give any way (I can find!) to take slices from
negative to positive indexes, although the range is not empty, nor the expected
indexes out of range that I am supplying.
Many programs that I write would require introducing variables and logical
statements to correct the problem which is very lengthy and error prone unless
there is a simple work around.
I *hate* replicating code every time I need to do this!
I also don't understand why slice() is not equivalent to an iterator, but can
replace an integer in __getitem__() whereas xrange() can't.
Here's an example for Linux shell, otherwise remove /bin/env...
{{{#!/bin/env python
a=[1,2,3,4,5,6,7,8,9,10]
print a[-4:3] # I am interested in getting [7,8,9,10,1,2] but I get [].
}}}
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