Update app.py

app.py

@@ -130,7 +130,7 @@ def similars_node(state: State) -> State:
   print(state['query_name'])
   try:
   #while x == 2:
-    if (state['query_smiles'] = None) or (state['query_smiles'] = '') or (state['query_smiles'] = 'none') or (state['query_smiles'] = ' '):
+    if (state['query_smiles'] == None) or (state['query_smiles'] == '') or (state['query_smiles'] == 'none') or (state['query_smiles'] == ' '):
         try:
           name = state["query_name"]
           res = pcp.get_compounds(name, "name")