app.py

import gradio as gr

from datetime import datetime

weights = []

def add_weight(weight, all_weights, total_weight):
    weights.append(int(weight))
    callback.flag([all_weights, total_weight])
    return weights, sum(weights)

def reset_weights():
    weights.clear()
    return weights, 0

callback = gr.CSVLogger()

with gr.Blocks(theme=gr.themes.Soft()) as iface:

    gr.Markdown("# Weigh Grapes")
    with gr.Row():
        with gr.Column():
            weight = gr.Number(label = "Crate Weight")
            add = gr.Button("Submit Weight")
        with gr.Column():
            all_weights = gr.Text(label = "All Weights", hidden = True)
            total_weight = gr.Text(label = "Total Weight")
            
    with gr.Row():
        reset = gr.Button("Reset Total")

    tolog = [all_weights, total_weight]

    callback.setup(tolog, "flagged_data_points")

    add.click(add_weight, inputs = [weight] + tolog, outputs = [all_weights, total_weight])
    reset.click(reset_weights, inputs = [], outputs = [all_weights, total_weight])

# Launch the Gradio interface
iface.launch()