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| """ | |
| Application that queries Wikipedia API and summarizes the top result. | |
| """ | |
| import os | |
| import urllib.parse | |
| import requests | |
| import streamlit as st | |
| from txtai.pipeline import Summary | |
| class Application: | |
| """ | |
| Main application. | |
| """ | |
| SEARCH_TEMPLATE = "https://en.wikipedia.org/w/api.php?action=opensearch&search=%s&limit=1&namespace=0&format=json" | |
| CONTENT_TEMPLATE = "https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro&explaintext&redirects=1&titles=%s" | |
| def __init__(self): | |
| """ | |
| Creates a new application. | |
| """ | |
| self.summary = Summary("sshleifer/distilbart-cnn-12-6") | |
| def run(self): | |
| """ | |
| Runs a Streamlit application. | |
| """ | |
| st.title("Wikipedia") | |
| st.markdown("This application queries the Wikipedia API and summarizes the top result.") | |
| query = st.text_input("Query") | |
| if query: | |
| query = urllib.parse.quote_plus(query) | |
| data = requests.get(Application.SEARCH_TEMPLATE % query).json() | |
| if data and data[1]: | |
| page = urllib.parse.quote_plus(data[1][0]) | |
| content = requests.get(Application.CONTENT_TEMPLATE % page).json() | |
| content = list(content["query"]["pages"].values())[0]["extract"] | |
| st.write(self.summary(content)) | |
| st.markdown("*Source: " + data[3][0] + "*") | |
| else: | |
| st.markdown("*No results found*") | |
| def create(): | |
| """ | |
| Creates and caches a Streamlit application. | |
| Returns: | |
| Application | |
| """ | |
| return Application() | |
| if __name__ == "__main__": | |
| os.environ["TOKENIZERS_PARALLELISM"] = "false" | |
| # Create and run application | |
| app = create() | |
| app.run() | |