有没有办法从视图函数中访问WTForms RadioField标签？

from flask import Flask, render_template, request
from flask_wtf import FlaskForm
from wtforms import RadioField

class MyForm(FlaskForm):
    my_radio = RadioField('Radio', choices=[('option1', 'Option 1'), ('option2', 'Option 2')])

app = Flask(__name__)
app.config['SECRET_KEY'] = 'your_secret_key'

@app.route('/', methods=['GET', 'POST'])
def index():
    form = MyForm()
    if form.validate_on_submit():
        selected_option = form.my_radio.data
        # 在这里可以对选中的选项进行处理
        return '选中的选项是：' + selected_option
    return render_template('index.html', form=form)

<form method="POST">
    {{ form.csrf_token }}
    {{ form.my_radio.label }}
    <br>
    {% for subfield in form.my_radio %}
        {{ subfield }}
        {{ subfield.label }}
        <br>
    {% endfor %}
    <input type="submit" value="提交">
</form>