Update app.py

app.py

@@ -4,6 +4,8 @@ import gradio as gr
 import pytube as pt
 from transformers import pipeline
 from huggingface_hub import model_info
+import os  # must be before setting environment variables
+
 os.environ["TRANSFORMERS_CACHE"] = "/app/cache"
 os.environ["HF_HOME"] = "/app/hf_home"