Python Flask中的复选框(如果未选中

from flask import Flask, request

app = Flask(__name__)

@app.route('/form', methods=['GET', 'POST'])
def form():
    if request.method == 'POST':
        selected_options = request.form.getlist('option')
        # 处理选中的选项
        return '选中的选项：{}'.format(selected_options)
    return '''
        <form method="POST" action="/form">
            <input type="checkbox" name="option" value="option1"> 选项1<br>
            <input type="checkbox" name="option" value="option2"> 选项2<br>
            <input type="checkbox" name="option" value="option3"> 选项3<br>
            <input type="submit" value="提交">
        </form>
    '''

if __name__ == '__main__':
    app.run()