def from_vdb(self, virus):
from vdb_download import vdb_download
from Bio.SeqRecord import SeqRecord
from Bio.Seq import Seq
myvdb = vdb_download(virus=virus)
myvdb.download(output=False)
self.raw_seqs={}
for v in myvdb.viruses:
attr = {k:v[k] for k in v if k!='sequence'}
seq = SeqRecord(Seq(v['sequence']), id=attr['strain'], name=attr['strain'], description=attr['strain'])
seq.attributes = attr
self.raw_seqs[attr['strain']] = seq
