fix

cas9on.py

@@ -123,9 +123,9 @@ def process_gene(gene_symbol, model_path):
     results = []
     if transcripts:
         for i in range(len(transcripts)):
+            transcript_id = transcripts[i]['display_name']
             Exons = transcripts[i]['Exon']
             cds_list = fetch_ensembl_cds(transcript_id)
-            transcript_id = transcripts[i]['display_name']
             for j in range(len(Exons)):
                 exon_id = Exons[j]['id']
                 gene_sequence = fetch_ensembl_sequence(exon_id)