Hi, It seems that by just going through the problem writing out a better explanation for the reply I have figured out a solution and the problem isnt as difficult as I thought it would be.
What is a wontok? Thanks Nathan PS --> the start of my reply: class Interval(object): _id = "gene1" _start = 50 _end = 200 _strand = 1 class Sequence(object): _sequence = "atgtcgtgagagagagttgtgag................." > Only vaguely. You use several terms which appear to be from your trade > jargon Sequence is a string made from a restricted alphabet (A,T,G,C...). Sequences can be aligned: 1 ATGCTGCAT 2 TAGCTGTTA ------- 2 5 I m trying to represent this as a graph Interval(id=1, start=2, end=6, strand=1) ---edge------Interval(id=2, start=2, end=6, strand=1) The problem is I was planning on storing the sequences in a dictionary {id:Seq}, however each dictionary would represent a different source of sequences. File1, File2....... ( STORE THE SOURCES AS A DICT AND HAVE SOURCE IN INTERVAL ASWELL -- http://mail.python.org/mailman/listinfo/python-list