Update app.py

app.py

@@ -31,39 +31,45 @@ def show_pdf(file_path):
 #@st.cache_data(experimental_allow_widgets=True)
 def showdl(file_to_lookat,to_dl_sbs,to_dl_indel,to_dl_dbs,to_dl_sbs_text,to_dl_indel_text,to_dl_dbs_text):
     for j in np.arange(0,len(to_dl_sbs)):
-        download_link1 = f'<a href="data:application/octet-stream;base64, \
+        if to_dl_sbs[j] != []:
+            download_link1 = f'<a href="data:application/octet-stream;base64, \
                 {base64.b64encode(to_dl_sbs[j]).decode()}" download=" \
                 {file_to_lookat[j].name}SBS.pdf">Download {file_to_lookat[j].name} Single Base Substition pdf</a>'
-        download_link2 = f'<a href="data:application/octet-stream;base64, \
+                      
+            download_link2 = f'<a href="data:application/octet-stream;base64, \
                 {base64.b64encode(to_dl_sbs_text[j]).decode()}" download=" \
                 {file_to_lookat[j].name}SBS.txt">Download {file_to_lookat[j].name} Single Base Substition table</a>'  
+            st.markdown(download_link1, unsafe_allow_html=True)  
 
-    for j in np.arange(0,len(to_dl_indel)):    
-        download_link3 = f'<a href="data:application/octet-stream;base64, \
+            st.markdown(download_link2, unsafe_allow_html=True)        
+
+    for j in np.arange(0,len(to_dl_indel)): 
+        if to_dl_indel[j] != []:
+            download_link3 = f'<a href="data:application/octet-stream;base64, \
                 {base64.b64encode(to_dl_indel[j]).decode()}" download=" \
                 {file_to_lookat[j].name}Indel.pdf">Download {file_to_lookat[j].name} indel pdf</a>'
-        download_link4 = f'<a href="data:application/octet-stream;base64, \
+            download_link4 = f'<a href="data:application/octet-stream;base64, \
                 {base64.b64encode(to_dl_indel_text[j]).decode()}" download=" \
-                {file_to_lookat[j].name}Indel.txt">Download {file_to_lookat[j].name} indel table</a>'        
+                {file_to_lookat[j].name}Indel.txt">Download {file_to_lookat[j].name} indel table</a>' 
+            st.markdown(download_link3, unsafe_allow_html=True)
+    
+            st.markdown(download_link4, unsafe_allow_html=True)            
     for j in np.arange(0,len(to_dl_dbs)):
-        download_link5 = f'<a href="data:application/octet-stream;base64, \
+        if to_dl_dbs[j] !=[]:
+            download_link5 = f'<a href="data:application/octet-stream;base64, \
                 {base64.b64encode(to_dl_dbs[j]).decode()}" download=" \
                 {file_to_lookat[j].name}DBS.pdf">Download {file_to_lookat[j].name} Double Base Substitution pdf</a>'       
-        download_link6 = f'<a href="data:application/octet-stream;base64, \
+            download_link6 = f'<a href="data:application/octet-stream;base64, \
                 {base64.b64encode(to_dl_dbs_text[j]).decode()}" download=" \
                 {file_to_lookat[j].name}DBS.txt">Download {file_to_lookat[j].name} Double Base Substitution table</a>'        
-     
-        st.markdown(download_link1, unsafe_allow_html=True)
+            st.markdown(download_link5, unsafe_allow_html=True)
+
+            st.markdown(download_link6, unsafe_allow_html=True)     
+
 
-        st.markdown(download_link2, unsafe_allow_html=True)
 
-        #st.markdown(download_link3, unsafe_allow_html=True)
-    
-        #st.markdown(download_link4, unsafe_allow_html=True)
 
-        #st.markdown(download_link5, unsafe_allow_html=True)
 
-        #st.markdown(download_link6, unsafe_allow_html=True)
         #st.download_button(label="Download image with single base substitution profiles", key=j,
         #                    data=to_dl_sbs[j],
         #                    file_name="SBS.pdf",