What is the Wikipedia search app in Flask framework?

>>> import wikipedia
>>> print wikipedia.summary("Wikipedia")
# Wikipedia (/ˌwɪkɨˈpiːdiə/ or /ˌwɪkiˈpiːdiə/ WIK-i-PEE-dee-ə) is a collaboratively edited, multilingual, free Internet encyclopedia supported by the non-profit Wikimedia Foundation...
>>> wikipedia.search("Barack")
# [u'Barak (given name)', u'Barack Obama', u'Barack (brandy)', u'Presidency of Barack Obama', u'Family of Barack Obama', u'First inauguration of Barack Obama', u'Barack Obama presidential campaign, 2008', u'Barack Obama, Sr.', u'Barack Obama citizenship conspiracy theories', u'Presidential transition of Barack Obama']
>>> ny = wikipedia.page("New York")
>>> ny.title
# u'New York'
>>> ny.url
# u'http://en.wikipedia.org/wiki/New_York'
>>> ny.content
# u'New York is a state in the Northeastern region of the United States. New York is the 27th-most exten'...
>>> ny.links[0]
# u'1790 United States Census'
>>> wikipedia.set_lang("fr")
>>> wikipedia.summary("Facebook", sentences=1)
# Facebook is an online social networking service on the Internet that allows information to be published (photographs, links, texts, etc.) by controlling their visibility by different categories of people.

Let’s start by installing the neccessary dependencies for the app to work.

pip install pipenv 
pipenv shell
pipenv install Flask

In order to be able to extract the data from Wikipedia, we must first install the Python Wikipedia library.

pipenv install wikipedia

Create a flask app

Create a file and name it app.py
Create the templates folder to store all the html files

Let’s start coding.

App.py

# import necessary libraries
from flask import Flask, request, render_template, redirect, url_for
import wikipedia
from wikipedia.wikipedia import summary
# referencing the flask app 
app = Flask(__name__)
#home view
@app.route("/", methods=["POST", "GET"])
def home():
    #if the request is using a POST method
    if request.method == 'POST':
        #try and except method helps to avoid crashing the app
        # instead it gives the error and the app continues functioning
        try:
            #pulling out the actual input from the html form
            wiki = request.form['Wikipedia']
            #summarize the data from wikipedia
            #output only two sentences
            data = wikipedia.summary(wiki, sentences=2)
            #f string which only works for python 3.6 and above
            return f'{data}'
        except Exception as e:
            return f'<p>{e} </p>'
    else:
        return render_template('home.html')
#for the app to start
if __name__ == '__main__':
    # inorder to turn on debug mode
	app.run(debug=True)

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Wikipedia search engine</title>
    <!-- bootstrap cdn -->
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet"
     integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3"
     crossorigin="anonymous">
</head>
<body>
    <div class="container mt-4">
        <!-- inorder to submit the request -->
        <form method="POST" action="." >
            <!-- name = wikipedia inorder to use it from the backend -->
            <input type="text" class="form-control" name="Wikipedia">
            <br>
            <button type="submit" class="btn btn-outline-primary">Search</button>
        </form>
    </div>  
</body>
</html>