app.py

import gradio as gr
import json
from io import StringIO
import os



def getDataFromGrasshopper(
        inputJson
        ):
    if inputJson is not None:
        return str(inputJson)
    return ""


demo = gr.Interface(
    fn=getDataFromGrasshopper,
    inputs=gr.Textbox(),  # Use a valid Gradio input component
    outputs=gr.Textbox()  # Use a valid Gradio output component
)

demo.launch()