app.py

import gradio as gr
import io
from bertopic import BERTopic

def detect_topics(file):
    if file is not None:
        text = file.read()
        text = text.decode('utf-8')
        
    topic_model = BERTopic()
    topics, probs = topic_model.fit_transform(texts)
    df_topic = topic_model.get_topic_info()
    #df_topic.to_csv('topics.csv')
    return (topic_model.visualize_topics())

#UI file
iface = gr.Interface(fn=detect_topics, 
                     inputs=gr.inputs.File(label="Upload File"), 
                     outputs="text")

iface.launch(debug=True)