Refactor summarizer.py: Improve code structure and formatting

summarizer.py

@@ -1,31 +1,58 @@
 import argparse
-from langchain.chains.summarize import load_summarize_chain
-from langchain_community.document_loaders import WebBaseLoader
-from langchain.prompts import PromptTemplate
+
 from langchain.chains.llm import LLMChain
+from langchain.chains.summarize import load_summarize_chain
+from langchain.prompts import PromptTemplate
 from langchain_community.chat_models import ChatOllama
+from langchain_community.document_loaders import WebBaseLoader
+
 
 def setup_argparse():
     """Setup argparse to parse command line arguments."""
-    parser = argparse.ArgumentParser(description="Summarize a document from a given URL.")
-    parser.add_argument("-u", "--url", required=True, help="URL of the document to summarize")
+    parser = argparse.ArgumentParser(
+        description="Summarize a document from a given URL."
+    )
+    parser.add_argument(
+        "-u", "--url", required=True, help="URL of the document to summarize"
+    )
     return parser.parse_args()
 
+
 def load_document(url):
     """Load document from the specified URL."""
     loader = WebBaseLoader(url)
     return loader.load()
 
+
 def setup_summarization_chain():
     """Setup the summarization chain with a prompt template and ChatOllama."""
-    prompt_template = PromptTemplate(template="""Write a detailed long summary of the following:
+    prompt_template = PromptTemplate(
+        template="""As a professional summarizer, create a concise and comprehensive summary of the provided text, be it an article, post, conversation, or passage, while adhering to these guidelines:
+            1. Craft a summary that is detailed, thorough, in-depth, and complex, while maintaining clarity and conciseness.
+
+            2. Incorporate main ideas and essential information, eliminating extraneous language and focusing on critical aspects.
+
+            3. Rely strictly on the provided text, without including external information.
+
+            4. Format the summary in paragraph form for easy understanding.
+
+            5.Conclude your notes with [End of Notes, Message #X] to indicate completion, where "X" represents the total number of messages that I have sent. In other words, include a message counter where you start with #1 and add 1 to the message counter every time I send a message.
+
+        By following this optimized prompt, you will generate an effective summary that encapsulates the essence of the given text in a clear, concise, and reader-friendly manner.
+
+        Write a detailed long summary of the following:
+
         "{text}"
-DETAILED SUMMARY:""", input_variables=["text"])
+
+        DETAILED SUMMARY:""",
+        input_variables=["text"],
+    )
 
     llm = ChatOllama(model="llama2")
     llm_chain = LLMChain(llm=llm, prompt=prompt_template)
     return llm_chain
 
+
 def main():
     args = setup_argparse()
     docs = load_document(args.url)
@@ -35,5 +62,6 @@ def main():
 
     print(result)
 
+
 if __name__ == "__main__":
     main()