Opens path object properly now

tools/set_ground_truths_of_reads.py

@@ -15,7 +15,7 @@ def parse_blast_xml(file_path):
              percent identity of best hsp, alignment length of best hsp,
              species_id
     """
-    with open(file_path, 'r') as f:
+    with file_path.open() as f:
         blast = Bio.Blast.NCBIXML.read(f)
 
     file_name = file_path.name.replace('_0.xml', '.fast5')