""" # standard library import cStringIO # biopython from Bio.Blast import NCBIWWW from Bio import Fasta # first get the sequence we want to parse from a FASTA file file_for_blast = open('m_cold.fasta', 'r') f_iterator = Fasta.Iterator(file_for_blast) f_record = f_iterator.next() print 'Doing the BLAST and retrieving the results...' result_handle = NCBIWWW.blast('blastn', 'nr', f_record) # save the results for later, in case we want to look at it save_file = open('m_cold_blast.out', 'w') blast_results = result_handle.read() save_file.write(blast_results) save_file.close() print 'Parsing the results and extracting info...' b_parser = NCBIWWW.BlastParser() # option 1 -- parse the string directly # b_record = b_parser.parse_str(blast_results) # option 2 -- create a handle from the string and parse it string_result_handle = cStringIO.StringIO(blast_results)