Sorting by item_in_another_list
ptmcg at austin.rr._bogus_.com
Wed Oct 25 19:40:39 CEST 2006
"J. Clifford Dyer" <jcd at sdf.lonestar.org> wrote in message
news:eho2kq$lqc$1 at aioe.server.aioe.org...
> ZeD wrote:
>> Paul Rubin wrote:
>>>> A = [0,1,2,3,4,5,6,7,8,9,10]
>>>> B = [2,3,7,8]
>>>> desired_result = [2,3,7,8,0,1,4,5,6,9,10]
>>> How about:
>>> desired_result = B + sorted(x for x in A if x not in B)
>> this. is. cool.
> Cool, yes, but I'm not entirely sure it does what the OP wanted. Partly
> because I'm not entirely sure what the OP wanted. Counter example:
> Given these variables:
> A = [0,1,2,3,4,5,6,8,9,10] # Note 7 is missing
> B = [2,3,7,8]
> which of the following should the function yield?
>From the original post:
"I have two lists, A and B, such that B is a subset of A."
So this is not a case that needs to be supported.
I envisioned something like the OP had a sequence of items to start with,
did a random sampling from the list, and wanted to move the sampled items to
the front of the list.
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