Fixes issue with failed graphs reporting empty sequence

Author: nadiadavidson

BuildSuperTranscript.py

@@ -196,7 +196,7 @@ def SuperTran(fname,verbose=False):
         if(verbose): print("One\n") 
         seq = next(iter(transcripts.values())) #Python 3 specific codee...
         cluster_id = (fname.split('/')[-1]).split('.fasta')[0]
-        anno = get_annotation_line(cluster_id,1,str(len(seq)),cluster_id)
+        anno = get_annotation_line(cluster_id,'1',str(len(seq)),cluster_id)
 
     else:
         #Try topo sorting a graph
@@ -214,7 +214,7 @@ def SuperTran(fname,verbose=False):
                     temp = len(val)
                     seq = ''.join(val)
             cluster_id = (fname.split('/')[-1]).split('.fasta')[0]
-            anno = get_annotation_line(cluster_id,1,str(len(seq)),cluster_id)
+            anno = get_annotation_line(cluster_id,'1',str(len(seq)),cluster_id)
             whirl_status=-1
             transcript_status=-1
     return(seq,anno,whirl_status,transcript_status)