how to redirect to previous page in django

from django.http import HttpResponseRedirect

def someview(request):
   ...
   return HttpResponseRedirect(request.META.get('HTTP_REFERER'))

<form method="POST">
    {% csrf_token %}
    {{ form }}
    <input type="hidden" name="next" value="{{ request.path }}">
    <button type="submit">Let's Go</button>
</form>