Form loop flask peewe

form_loop.py

def form_loop(form, show_label=False):
    try:
        rend = u"""
          {{ form.hidden_tag() }}

          {% for field in form if field.widget.input_type !='hidden' %}
              <fieldset data-iden="{{ field.name }}">
                {% if show_label %}
                  {{ field.label }}
                {% endif %}
                
                {{ field(class='form-control', placeholder= field.description if field.description  else field.name | capitalize) }}
                {% if field.errors %}
                  {% for error in field.errors %}
                    <div class="alert alert-danger">{{ error }}</div>
                  {% endfor %}
                {% endif %}
              </fieldset>
          {% endfor %}
        """

        return render_template_string(rend, form=form, show_label=show_label)
    except:
        return u'Error loop_form() {}'.format(str(sys.exc_info()))