Update app.py

app.py

@@ -14,6 +14,7 @@ import zipfile
 import io
 import gtracks
 import subprocess
+import cyvcf2
 
 
 
@@ -322,7 +323,7 @@ if selected_model == 'Cas9':
     elif target_selection == 'mutation':
         # Prediction button
         predict_button = st.button('Predict on-target')
-        vcf_reader =...
+        vcf_reader = cyvcf2.VCF('SRR25934512.filter.snps.indels.vcf.gz')
 
         if 'exons' not in st.session_state:
             st.session_state['exons'] = []