[Biopython-dev] Reading sequences: FormatIO, SeqIO, etc

[Felix Schlesinger]

> Have you got a feeling for the difference in memory required for a large
> Fasta file in memory as:
> * Title string, sequence string
> * Title string, sequence as Seq object
> * SeqRecords (which include the sequence as a Seq object)

>From looking at the code the only difference should be one instance of
alphabet and one reference to it per sequence.
  The main difference is that Seq.data.method involves some python,
while string.method is pure C code.

Felix