<form method="post">
    {% csrf_token %}
    {{ form.as_p }}
    <button type="submit">Sign up</button>
  </form>

<form method="post" novalidate>
  {% csrf_token %}
  {{ form }}
  <button type="submit">Submit</button>
</form>

Fíjate aquí, con novalidate no haría la validación de datos local.

   <form method="post" action="{% url 'login' %}">
    {% csrf_token %}

    <div>
      <td>{{ form.username.label_tag }}</td>
      <td>{{ form.username }}</td>
    </div>
    <div>
      <td>{{ form.password.label_tag }}</td>
      <td>{{ form.password }}</td>
    </div>
    <div>
      <input type="submit" value="login" />
      <input type="hidden" name="next" value="{{ next }}" />
    </div>
    </form>

            <form action="{% url 'login' %}" method="POST">
                {% csrf_token %}
                <input type="text" name="username" placeholder="Username">
                <input type="password" name="password" placeholder="Password">
                <input type='submit' value='login'>
            </form>

# In form_snippet.html:
{% for field in form %}
    <div class="fieldWrapper">
        {{ field.errors }}
        {{ field.label_tag }} {{ field }}
    </div>
{% endfor %}