Biopython have SeqIO write a circular annotation to Genbank header

Question

[Harijay]

While writing a new sequence to a genbank file . I am using code like

_seqrecord = SeqRecord.SeqRecord(Seq.Seq(seq,generic_dna),name=name, id=seqID, description=self.description)
 SeqIO.write(_seqrecord,handle=outfile ,format="genbank")

Is there a way to set the topology of the sequence to circular ?

I could see something in the source code about setting topology in a FeatureConsumer, but am still confused as to how I can set the topology or residue type to circular DNA during output of a seqrecord.

Answer 1

[Harijay]

I figured it out immediately after posting.

_seqrecord.annotations["topology"]="circular"

Sets the topology to circular.