flask show while calculating

[keuninkske]

hello,

i am wondering if flask has the ability to render the template already halfway trough the calculation
following is example code

@app.route('/')
def my_form():

    return render_template("interface.html")



@app.route('/', methods=['POST'])
def my_form_post():

    time.sleep(5)
    result = "1"
    render_template("interface.html", result=result)
    time.sleep(5)
    result = "2"
    render_template("interface.html", result=result)
    time.sleep(5)
    result = "3"
    return render_template("interface.html", result=result)

i cannot find online how to make this happen
thanks for any help