Update cas9on.py

cas9on.py

@@ -83,7 +83,7 @@ def find_crispr_targets(sequence, chr, start, strand, transcript_id, exon_id, pa
             if i >= target_length:
                 target_seq = sequence[i - target_length:i + 3]
                 tar_start = start + i - target_length
-                tar_end = start + i + 3
+                tar_end = start + i + 3 - 1
                 gRNA = ''.join([dnatorna[base] for base in sequence[i - target_length:i]])
                 targets.append([target_seq, gRNA, chr, str(tar_start), str(tar_end), str(strand), transcript_id, exon_id])