how to get value from txtbox in flask

1from flask import Flask, request, render_template
2
3app = Flask(__name__)
4
5@app.route('/')
6def my_form():
7    return render_template('my-form.html')
8
9@app.route('/', methods=['POST'])
10def my_form_post():
11    text = request.form['text']
12    processed_text = text.upper()
13    return processed_text

1<form method="POST">
2    <input name="text">
3    <input type="submit">
4</form>