python flask 填写form

<form role="form" method="POST"> {{ form.csrf_token }} <div class="box-body"> <div class="form-group"> <label for="input_name">{{ form.name.label }}</label> {{ form.name }} {% for err in form.name.errors %} <div class="col-md-12" > <p style="color:red">{{ err }}</p> </div> {% endfor %} </div> </div> <div class="box-footer"> {{ form.submit }} </div> </form>