biopython

[madhuri vio]

i have tried this still unable to get an output

from Bio import Seq
from Bio import SeqIO
from Bio import SeqRecord

for seq_record in SeqIO.read("ls_MTbH37Rv.fasta", "fasta"):
    print seq_record.id
    print repr(seq_record.seq)
    print len(seq_record)

python bio.py
Traceback (most recent call last):
  File "bio.py", line 10, in <module>
    for seq_record in SeqIO.read("ls_MTbH37Rv.fasta", "fasta"):
  File "/var/lib/python-support/python2.6/Bio/SeqIO/__init__.py", line 433,
in read
    iterator = parse(handle, format, alphabet)
  File "/var/lib/python-support/python2.6/Bio/SeqIO/__init__.py", line 342,
in parse
    raise TypeError("Need a file handle, not a string (i.e. not a
filename)")
TypeError: Need a file handle, not a string (i.e. not a filename)
-- 
madhuri :)
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