def fasta_to_sequence(input, **options):
lines = fasta_to_fasta(input)
for line in lines:
header = line
seq = lines.next()
const = lines.next()
yield header, seq, const
def fasta_to_sequence(input, **options):
lines = fasta_to_fasta(input)
for line in lines:
header = line
seq = lines.next()
constr = lines.next()
if len(seq) == 0 or len(constr) == 0:
raise Exception('ERROR: empty sequence or constraint')
yield header, seq, constr
