Question 31: Consider the following flask application. If this flask …

1from flask import Flask, render_template, request
2app = Flask(__name__)
3
4@app.route('/')
5def out():
6        val = request.args
7
8        if val['num'] == '':
9            return "<h1>Enter a valid number</h1>"
10        elif val['num'].isalpha()==True:
11            return "<h1>Invalid number</h1>"
12        else:
13            out = (val['num']) + (val['num'])
14            return f'<h1>{out}</h1>'
15
16if(__name__ == "__main__"):
17    app.run(debug=True)