Is there a way to hide the csrf label while looping through form using Flask and Flask-WTForms?

If you want a more general solution that works for all hidden fields instead of just the CSRF token:

{{ form.hidden_tag() }}
{% for field in form if field.widget.input_type != 'hidden' %}
  {{ field.label }}
  {{ field }}
{% endfor %}

form.hidden_tag() is supplied by Flask-WTF.