app.py

import gradio as gr
import pandas as pd
import xport.v56
import tempfile
import os

def convert_xpt_to_csv(xpt_file):
    try:
        # Save uploaded file to a temp file
        with tempfile.NamedTemporaryFile(delete=False, suffix=".xpt") as temp:
            temp.write(xpt_file.read())
            xpt_path = temp.name

        # Load using xport v56 parser
        with open(xpt_path, "rb") as f:
            lib = xport.v56.load(f)
            df = pd.DataFrame(lib)

        # Save as CSV
        csv_path = xpt_path.replace(".xpt", ".csv")
        df.to_csv(csv_path, index=False)
        return csv_path

    except Exception as e:
        return f"❌ Error: {str(e)}"

gr.Interface(
    fn=convert_xpt_to_csv,
    inputs=gr.File(label="Upload .XPT File"),
    outputs=gr.File(label="Download .CSV File"),
    title="XPT to CSV Converter",
    description="Upload SAS XPORT (.xpt) files and get CSV output instantly."
).launch()