app.py

import gradio as gr

# Function to update the student numbers dropdown based on the selected class
def update_dropdown(class_prefix):
    # Check if a class prefix is selected
    if class_prefix:
        # Generate student numbers for the selected class
        student_numbers = [f"{class_prefix}{str(i).zfill(2)}" for i in range(1, 41)]
        return student_numbers
    else:
        # Return an empty list if no class prefix is selected
        return []

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

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

    # Update student dropdown when class dropdown changes
    class_dropdown.change(fn=update_dropdown, inputs=class_dropdown, outputs=student_dropdown)

# Run the app
demo.launch()