Update app.py

app.py

@@ -38,12 +38,12 @@ def embedding_db():
 
 def doc_preprocessing():
     loader = DirectoryLoader(
-        'data/',   # Assuming the 'data' folder is in the same directory
+        'data/',   
         glob='**/*.pdf', 
         show_progress=True
-    )
-    )
+    )  # Extra closing parenthesis removed 
     docs = loader.load()
+
     text_splitter = CharacterTextSplitter(
         chunk_size=1000,
         chunk_overlap=0