se cambio a multiples archivos

app.py

@@ -11,14 +11,15 @@ from langchain.chains.question_answering import load_qa_chain
 st.set_page_config('preguntaDOC')
 st.header("Pregunta a tu PDF")
 OPENAI_API_KEY = st.text_input('OpenAI API Key', type='password')
-pdf_obj = st.file_uploader("Carga tu documento", type="pdf", on_change=st.cache_resource.clear)
+pdf_files = st.file_uploader("Carga tus documentos", type="pdf", accept_multiple_files=True, on_change=st.cache_resource.clear)
 
 @st.cache_resource 
-def create_embeddings(pdf):
-    pdf_reader = PdfReader(pdf)
+def create_embeddings(pdfs):
     text = ""
-    for page in pdf_reader.pages:
-        text += page.extract_text()
+    for pdf in pdfs:
+        pdf_reader = PdfReader(pdf)
+        for page in pdf_reader.pages:
+            text += page.extract_text()
 
     text_splitter = RecursiveCharacterTextSplitter(
         chunk_size=800,
@@ -32,9 +33,9 @@ def create_embeddings(pdf):
 
     return knowledge_base
 
-if pdf_obj:
-    knowledge_base = create_embeddings(pdf_obj)
-    user_question = st.text_input("Haz una pregunta sobre tu PDF:")
+if pdf_files:
+    knowledge_base = create_embeddings(pdf_files)
+    user_question = st.text_input("Haz una pregunta sobre tus PDFs:")
 
     if user_question:
         os.environ["OPENAI_API_KEY"] = OPENAI_API_KEY
@@ -43,4 +44,4 @@ if pdf_obj:
         chain = load_qa_chain(llm, chain_type="stuff")
         respuesta = chain.run(input_documents=docs, question=user_question)
 
-        st.write(respuesta)    
+        st.write(respuesta)