Update app.py

app.py

@@ -3,42 +3,47 @@ import openai
 from langchain.docstore.document import Document
 from langchain.text_splitter import CharacterTextSplitter
 from langchain.chains.summarize import load_summarize_chain
+from langchain.llms import OpenAI
 
 def generate_response(txt, openai_api_key):
     try:
         # Set up OpenAI API key
         openai.api_key = openai_api_key
 
-        # Split text
+        # Split text into chunks
         text_splitter = CharacterTextSplitter()
         texts = text_splitter.split_text(txt)
 
-        # Create multiple documents
+        # Create documents from the text chunks
         docs = [Document(page_content=t) for t in texts]
 
-        # Text summarization using langchain's summarization chain
-        chain = load_summarize_chain(llm="openai", chain_type='map_reduce')
+        # Instantiate the OpenAI LLM model
+        llm = OpenAI(temperature=0, openai_api_key=openai_api_key)
+
+        # Create the summarization chain and summarize the documents
+        chain = load_summarize_chain(llm=llm, chain_type='map_reduce')
         return chain.run(docs)
     except Exception as e:
         st.error(f"An error occurred during summarization: {str(e)}")
         return None
 
-# Page title
+# Page title and layout
 st.set_page_config(page_title='🦜🔗 Text Summarization App')
 st.title('🦜🔗 Text Summarization App')
 
-# Text input
+# Text input area for user to input text
 txt_input = st.text_area('Enter your text', '', height=200)
 
-# Form to accept user's text input for summarization
+# Form to accept the user's text input for summarization
 response = None
 with st.form('summarize_form', clear_on_submit=True):
     openai_api_key = st.text_input('OpenAI API Key', type='password', disabled=not txt_input)
     submitted = st.form_submit_button('Submit')
     if submitted and openai_api_key.startswith('sk-'):
-        with st.spinner('Calculating...'):
+        with st.spinner('Summarizing...'):
             response = generate_response(txt_input, openai_api_key)
 
+# Display the response if available
 if response:
     st.info(response)
 
@@ -48,6 +53,5 @@ st.write("You can get your own OpenAI API key by following the instructions:")
 st.write("""
 1. Go to [OpenAI API Keys](https://platform.openai.com/account/api-keys).
 2. Click on the `+ Create new secret key` button.
-3. Next, enter an identifier name (optional) and click on the `Create secret key` button.
+3. Enter an identifier name (optional) and click on the `Create secret key` button.
 """)
-1