import gradio as gr

def update_dropdown(class_prefix):
    # Create a list of options based on the selected class prefix
    student_numbers = [f"{class_prefix}{str(i).zfill(2)}" for i in range(1, 41)]
    return student_numbers

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

# Create the Gradio interface
with gr.Blocks() as demo:
    with gr.Row():
        class_dropdown = gr.Dropdown(label="Class", choices=class_options)
        student_dropdown = gr.Dropdown(label="Student")

    class_dropdown.change(fn=update_dropdown, inputs=class_dropdown, outputs=student_dropdown)

# Launch the app
demo.launch()