added sources list

app.py

@@ -38,10 +38,13 @@ def add_text(history, text):
 def bot(history):
  response = infer(history[-1][0])
  history[-1][1] = response['result']
- return history
+ sources = [doc.metadata.get("source") for doc in response['source_documents']]
+ src_list = '\n'.join(sources)
+ print_this = response['result']+"\n\n\n Sources: \n\n\n"+src_list
+ # return history
+ return print_this
 
-def infer(question):
- 
+def infer(question): 
  query = question
  result = qa({"query": query})
  return result