add more functions

app.py

@@ -449,7 +449,8 @@ iface = gr.Interface(
         ),
         gr.File(
             label="Or upload a text file with SMILES",
-            file_types=[".txt"]
+            file_types=[".txt"],
+            optional=True  # Make file input optional
         ),
         gr.Checkbox(
             label="Show linear representation"
@@ -479,14 +480,14 @@ iface = gr.Interface(
     Input: Either enter a SMILES string directly or upload a text file
     """,
     examples=[
-        [  # Example 1
+        [
             "CC(C)C[C@@H]1NC(=O)[C@@H]2CCCN2C(=O)[C@@H](CC(C)C)NC(=O)[C@@H](CC(C)C)N(C)C(=O)[C@H](C)NC(=O)[C@H](Cc2ccccc2)NC1=O",
-            None,
+            gr.File.update(visible=False),  # Hide file input for examples
             True
         ],
-        [  # Example 2
+        [
             "CC(C)C[C@@H]1OC(=O)[C@H](C)NC(=O)[C@H](C(C)C)OC(=O)[C@H](C)N(C)C(=O)[C@@H](C)NC(=O)[C@@H](Cc2ccccc2)N(C)C1=O",
-            None,
+            gr.File.update(visible=False),  # Hide file input for examples
             True
         ]
     ],