app.py

import streamlit as st
from langchain.prompts import PromptTemplate
from langchain_community.llms import CTransformers

def getLlamaResponse(input_text, no_words, blog_style):
    llm=CTransformers(model="TheBloke/TinyLlama-1.1B-Chat-v0.3-GGUF",
        model_type='llama',
        config={'max_new_tokens':256, 
                'repetition_penalty': 1.1, 
                'temperature':0.6})

    # create a prompt

    template="""
    <|im_start|>system
    You are a helping bot, ghost writer for weblog.<|im_end|>
    <|im_start|>user
    Write a blog post about the topic: {input_text} in {blog_style} style. The blog should be {no_words} words long.
    <|im_end|>
    <|im_start|>assistant
    """
    prompt=PromptTemplate(input_variables=["blog_style", "input_text", "no_words"], 
                          template=template)
    
    # generate the response
    response=llm.invoke(prompt.format(blog_style=blog_style, input_text=input_text, no_words=no_words))
    
    return response

# Streamlit UI
st.set_page_config(page_title="GenBlog Demo", 
                   page_icon="📚", 
                   layout="centered",
                   initial_sidebar_state='collapsed')
st.header("GenBlog Demo 📚")
input_text=st.text_input("Enter the Blog Topic")
col1, col2 = st.columns([5, 5])
with col1:
    no_words=st.text_input("Enter the number of words", value=100)
with col2:
    blog_style=st.selectbox("Select the Blog Style", ["Personal", "Research", "Story Driven"])
submit=st.button("Generate Blog")
if submit:
    st.write(getLlamaResponse(input_text, no_words, blog_style))