[Tutor] Mapping elements in various lists - walking over lists andtheir elements
alan.gauld at freenet.co.uk
Wed Apr 5 20:48:27 CEST 2006
> One of the proble is that, Contig27915_RC is seen
> associated with many XM entries in nbat. However,
> with the above script I could replace only once in
> xta. I could not print Contig27915_RC with many XM_
> guys in nbat. How can this be done.
> Finally, this whole process seems to be more
> cumbersome to me. Could any one tip me with a new way
> of dealing this 3 way mapping.
A common generic way to deal with this is to construct an
intermediate data model such as a dictionary that contains
the key element and a list of the keyed items in the file.
The list could be the items themselves ort a tuple containing
such info as their index (or seek position). Then you can iterate
over the data making multiple changes as defined in the
This is somewhat similar to a thread last month, take a look
in the archives for more ideas.
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