import gradio as gr

# Function to dynamically update the student numbers based on the selected class
def update_dropdown(class_prefix):
    # Generate student numbers for the selected class
    return [f"{class_prefix}{str(i).zfill(2)}" for i in range(1, 41)]

# Define the class options for the first dropdown
class_options = ["5H", "5E", "5RS"]

# Create the Gradio interface
with gr.Blocks() as demo:
    # Create the first dropdown with class options
    class_dropdown = gr.Dropdown(label="Class", choices=class_options)
    # Initialize the second dropdown with an empty list; it will be updated dynamically
    student_dropdown = gr.Dropdown(label="Student", choices=[])

    # When the class dropdown changes, update the student dropdown
    class_dropdown.change(fn=update_dropdown, inputs=class_dropdown, outputs=student_dropdown)

# Launch the app
demo.launch()