How can I identify requests made via AJAX in Python's Flask?

Flask comes with a is_xhr attribute in the request object.

from flask import request
@app.route('/', methods=['GET', 'POST'])
def home_page():
    if request.is_xhr:
        context = controllers.get_default_context()
        return render_template('home.html', **context)

Notice: This solution is deprecated and not viable anymore.