[Biopython-dev] [Bug 1944] Align.Generic adding iterator and more

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http://bugzilla.open-bio.org/show_bug.cgi?id=1944





------- Comment #15 from biopython-bugzilla at maubp.freeserve.co.uk  2008-06-16 16:07 EST -------
Created an attachment (id=943)
 --> (http://bugzilla.open-bio.org/attachment.cgi?id=943&action=view)
Minimal __getitem__ method for generic alignment

This patch just adds a __getitem__ to the alignment which ONLY accepts a single
integer index and returns the corresponding SeqRecord object.  I propose to add
this NOW, as I think even just this is a worthwhile improvement.

This is a natural expectation given the current __iter__ behaviour and the
model of the alignment as a list of SeqRecord objects.  Its also part of the
more rich behaviour discussed above, which we can add more easily if/when the
SeqRecord gets a __getitem__ method (bug 2507).

Comments on this particular patch?  Should we add __len__ at the same time
giving the number of rows in the alignments?


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