How to populate dropdown on loading through flask?

What i have tried:
Here is my test.html which gets options(list) from test.py

<select>
            <div class="test">
                <option selected="selected"> Select </option>
                {% for option in options %}
                <option value="{{ option }}">{{ option }}</option>
                {% endfor %}
            </select>
                </div>    

test.py

            @app.route('/test', methods=["GET"])
            @login_required
            def transactions_view():
                options = ["0","7","14","30"]
                return render_template("test.html", options=options)

Is there any other ways to update the dropdown?

The above html and py file gives the dropdown required,
But i'm unable to assign select attribute to above html?