Update app.py

app.py

@@ -332,7 +332,7 @@ def make_fixed_positions_dict(atomsel, residue_index_df):
     # based on selected index now get resids
     selected_residues = [str(i) for i in selected_residues]
     if len(selected_residues)==0:
-        return {'cleaned':{}}, []
+        return None, []
     selected_residues_str = " ".join(selected_residues)
     selected_residues=set(mol.get('resid', sel=f"index {selected_residues_str}"))
 
@@ -432,7 +432,7 @@ def update(
 
     chain_id_dict = None
     if atomsel == "":
-        fixed_positions_dict, selected_residues = {'cleaned':{}}, []
+        fixed_positions_dict, selected_residues = None, []
     else:
         fixed_positions_dict, selected_residues=make_fixed_positions_dict(atomsel, mol_index)
     
@@ -697,8 +697,8 @@ def update(
                         )
                         seq_list.append(seq + chain_s)
                         message += f"{line}\n"
-
-    message += f"\nfixed positions:* {fixed_positions_dict['cleaned']} \n\n*uses CHAIN:[1..len(chain)] residue numbering"
+    if fixed_positions_dict!=None:
+        message += f"\nfixed positions:* {fixed_positions_dict['cleaned']} \n\n*uses CHAIN:[1..len(chain)] residue numbering"
     # somehow sequences still contain X, remove again
     for i, x in enumerate(seq_list):
         for aa in omit_AAs: