[Biopython] cleaning sequences

[Liam Thompson]

Hi everyone

I was wondering if there was a built in method for determining whether a
sequence (Genbank or FASTA) is an Ambiguous or Unambiguous sequence. The
reason I ask is I am trying to subtype a couple hundred viral DNA sequences,
and due to bad sequencing, the sequences often have ambiguous characters in
them, which the algorithm used to subtype doesn't like. I realise I can
compare each letter of each genome in a loop with GATC to determine
ambiguity, but it might be easier if there was a built in function.

Thanks
Liam



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