greenflame <[EMAIL PROTECTED]>:
> Roberto: I do not understand the first half of the last line of your
> code.
[mainlist[i - 1] for i in orderinglist] is a list made with the
elements of orderinglist, but instead of taking the actual value i
from the list, the value that is taken is mainlist[i - 1].
If orderinglist is [3, 4, 2, 1], then [mainlist[i - 1] for i in
orderinglist] is:
[mainlist[3 - 1], mainlist[4 - 1], mainlist[2 - 1], mainlist[1 - 1]]
Remember that indexing starts from 0.
--
Roberto Bonvallet
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