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from transformers import pipeline
import streamlit as st
import requests
from bs4 import BeautifulSoup
import html
import time
from io import BytesIO
from reportlab.lib.pagesizes import A4
from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
from reportlab.platypus import SimpleDocTemplate, Paragraph
from reportlab.lib.enums import TA_JUSTIFY
import pyttsx3
# Initialize the summarization pipeline
summarizer = pipeline("summarization", model="facebook/bart-small") # facebook/bart-large-cnn
# Set page layout to wide
st.set_page_config(layout="wide")
# Function to create PDF with justified text
def create_pdf(text):
pdf_buffer = BytesIO()
doc = SimpleDocTemplate(pdf_buffer, pagesize=A4)
styles = getSampleStyleSheet()
justified_style = ParagraphStyle(
name="JustifiedStyle",
parent=styles["BodyText"],
alignment=TA_JUSTIFY,
fontSize=12,
leading=15
)
paragraph = Paragraph(text, justified_style)
doc.build([paragraph])
pdf_buffer.seek(0)
return pdf_buffer
# Function to read aloud the summary
def read_aloud(text):
engine = pyttsx3.init()
engine.say(text)
engine.runAndWait()
# Main application
def main():
st.title("Abstractive Article Summarizer")
url = st.text_input("Enter the URL of an article:", key="url")
max_chunk = 300
if url:
try:
response = requests.get(url)
response.encoding = 'utf-8'
soup = BeautifulSoup(response.text, 'html.parser')
results = soup.find_all(['h1', 'p'])
text = [html.unescape(result.get_text()) for result in results]
article = ' '.join(text)
st.subheader("Extracted Article Content")
st.text_area("Article", article, height=300)
st.markdown(f"**Article Length:** {len(article)} characters")
article = article.replace('.', '.<eos>').replace('?', '?<eos>').replace('!', '!<eos>')
sentences = article.split('<eos>')
current_chunk = 0
chunks = [[]]
for sentence in sentences:
if len(chunks[current_chunk]) + len(sentence.split(' ')) <= max_chunk:
chunks[current_chunk].extend(sentence.split(' '))
else:
current_chunk += 1
chunks.append(sentence.split(' '))
for chunk_id in range(len(chunks)):
chunks[chunk_id] = ' '.join(chunks[chunk_id])
progress_bar = st.progress(0)
status_text = st.empty()
summaries = []
start_time = time.time()
for i, chunk in enumerate(chunks):
summary = summarizer(chunk, max_length=120, min_length=30, do_sample=False)
summaries.append(summary[0]['summary_text'])
percent_complete = (i + 1) / len(chunks)
elapsed_time = time.time() - start_time
estimated_total_time = elapsed_time / percent_complete
estimated_time_remaining = estimated_total_time - elapsed_time
progress_bar.progress(percent_complete)
status_text.markdown(f"**Progress:** {percent_complete * 100:.2f}% - "
f"**Estimated time remaining:** {estimated_time_remaining:.2f} seconds")
summary_text = ' '.join(summaries)
st.subheader("Summarized Article Content")
st.text_area("Summary", summary_text, height=300)
st.markdown(f"**Summary Length:** {len(summary_text)} characters")
pdf_buffer = create_pdf(summary_text)
# Compression Ratio
original_length = len(article.split())
summary_length = len(summary_text.split())
compression_ratio = (summary_length / original_length) * 100
st.markdown(f"### Compression Ratio: {round(compression_ratio)}%")
if compression_ratio < 20:
st.success(f"Great Compression!\nThe summary is succinct and effectively highlights key points.")
elif 20 <= compression_ratio <= 40:
st.info(f"Well-balanced Summary.\nIt maintains essential details while being brief.")
else:
st.warning(f"Compression may be excessive.\nThe summary could be too brief and miss important details.")
# Display buttons in columns
col1, col2 = st.columns([1, 1])
with col1:
st.download_button(
label="Download Summary as PDF",
data=pdf_buffer,
file_name="summarized_article.pdf",
mime="application/pdf"
)
with col2:
if st.button("Read Aloud Summary"):
read_aloud(summary_text)
except Exception as e:
st.warning(f"Error: {e}")
# Run the app
if __name__ == '__main__':
main()
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