Update app.py

app.py

@@ -1,21 +1,21 @@
 import gradio as gr
 
+# Function to update the second dropdown based on the first
 def update_dropdown(class_prefix):
-    # Generate a list of student numbers for the class
-    if class_prefix is not None:
-        return [f"{class_prefix}{str(i).zfill(2)}" for i in range(1, 41)]
-    return []
+    # This generates a list of values like "5H01", "5H02", ..., "5H40"
+    return [f"{class_prefix}{str(i).zfill(2)}" for i in range(1, 41)]
 
-# Define class options for the first dropdown
-class_options = ["5H", "5E", "5RS"]
+# This is the initial value for the first dropdown
+initial_class = "5H"
 
 # Create the Gradio interface
 with gr.Blocks() as demo:
-    class_dropdown = gr.Dropdown(label="Class", choices=class_options, value=class_options[0])
-    # Initialize the second dropdown with the values from the first class as default
-    student_dropdown = gr.Dropdown(label="Student", choices=update_dropdown(class_options[0]))
+    # The first dropdown is initialized with "5H" as the default value
+    class_dropdown = gr.Dropdown(label="Class", choices=["5H", "5E", "5RS"], value=initial_class)
+    # The second dropdown is initialized with the values corresponding to "5H"
+    student_dropdown = gr.Dropdown(label="Student", choices=update_dropdown(initial_class))
 
-    # Bind the update function to the class dropdown
+    # When the first dropdown changes, the second dropdown's choices are updated
     class_dropdown.change(fn=update_dropdown, inputs=class_dropdown, outputs=student_dropdown)
 
 # Launch the app