How to generically transform a list?
PPNTWIMBXFFC at spammotel.com
Thu Aug 26 16:50:26 CEST 2004
Suppose you have a list of lists:
theList = [['a',1,11,'aa'], ['b',2,22,'bb'],['c',3,33,'cc']]
I would like to have a GENERIC way how to turn this list of list into
another list of list.
- A user can choose which columns she wants
- A user can select the order of the columns
The user wants columns: 1,2
The user wants it to be ordered: 2,1
A non generic approach would maybe do the following:
>>> theList = [['a',1,11,'aa'], ['b',2,22,'bb'],['c',3,33,'cc']]
>>> new_list = [[row, row] for row in theList]
[[11, 1], [22, 2], [33, 3]]
I am sure there must be a rather elegant generic approach, which is
lurking somewhere to be realeased.
Thanks for any hint in advance,
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