Update app.py

app.py

@@ -4,6 +4,7 @@ import streamlit.components.v1 as components
 from gtts import gTTS
 from gtts.lang import tts_langs
 from io import BytesIO
+import os
 
 # 페이지 설정
 st.set_page_config(page_title="ViDraft", layout="wide")