Update app.py

app.py

@@ -1,5 +1,5 @@
 import gradio as gr
-import random, shutil, openai, os
+import openai, os, random, shutil
 
 from langchain.chains import RetrievalQA
 from langchain.chat_models import ChatOpenAI
@@ -22,8 +22,10 @@ template = """Use the following pieces of context to answer the question at the
 
 QA_CHAIN_PROMPT = PromptTemplate(input_variables = ["context", "question"], template = template)
 
-CHROMA_DIR  = "docs/chroma" + randrange(1000).str()
-YOUTUBE_DIR = "docs/youtube" + randrange(1000).str()
+rng = random.randrange(1000000).str()
+
+CHROMA_DIR  = "docs/chroma" + rng
+YOUTUBE_DIR = "docs/youtube" + rng
 
 MODEL_NAME  = "gpt-4"