<form>
...
<div>
  {{ form.name.label_tag }}
  {% if form.name.help_text %}
    <div class="helptext" id="{{ form.name.auto_id }}_helptext">
      {{ form.name.help_text|safe }}
    </div>
  {% endif %}
  {{ form.name.errors }}
  {{ form.name }}
  <div class="row">
    <div class="col">
      {{ form.email.label_tag }}
      {% if form.email.help_text %}
        <div class="helptext" id="{{ form.email.auto_id }}_helptext">
          {{ form.email.help_text|safe }}
        </div>
      {% endif %}
      {{ form.email.errors }}
      {{ form.email }}
    </div>
    <div class="col">
      {{ form.password.label_tag }}
      {% if form.password.help_text %}
        <div class="helptext" id="{{ form.password.auto_id }}_helptext">
          {{ form.password.help_text|safe }}
        </div>
      {% endif %}
      {{ form.password.errors }}
      {{ form.password }}
    </div>
  </div>
</div>
...
</form>

<form>
...
<div>
  {{ form.name.as_field_group }}
  <div class="row">
    <div class="col">{{ form.email.as_field_group }}</div>
    <div class="col">{{ form.password.as_field_group }}</div>
  </div>
</div>
...
</form>

from django.forms.renderers import TemplatesSetting


class CustomFormRenderer(TemplatesSetting):
    field_template_name = "field_snippet.html"

class MyForm(forms.Form):
    subject = forms.CharField(template_name="my_custom_template.html")

def index(request):
    form = ContactForm()
    subject = form["subject"]
    context = {"subject": subject.render("my_custom_template.html")}
    return render(request, "index.html", context)

class MyModel(models.Model):
    created = models.DateTimeField(db_default=Now())

from django.db import models
from django.db.models import F


class Square(models.Model):
    side = models.IntegerField()
    
    area = models.GeneratedField(
        expression=F("side") * F("side"),
        output_field=models.BigIntegerField(),
        db_persist=True,
    )

class Tag(models.Model):
    VISIBILITY_INTERNAL = "internal"
    VISIBILITY_PUBLIC = "public"
    VISIBILITY_CHOICES = [
        (VISIBILITY_INTERNAL, _("Internal")),
        (VISIBILITY_PUBLIC, _("Public")),
    ]
    visibility = models.Charfield(max_length=20, choices=VISIBILITY_CHOICES)

class VisibilityChoices(models.TextChoices):
    internal = "internal", _("Internal")
    public = "public", _("Public")
    
    
class Tag(models.Model):
    visibility = models.Charfield(max_length=20, choices=Visibility.choices)

VISIBLITY_CHOICES = {
  "internal": _("Internal"),
  "public": _("Public"),
}
    
    
class Tag(models.Model):
    visibility = models.Charfield(max_length=20, choices=VISIBILITY_CHOICES)

def get_order_choices():
    return [(value, str(value)) for value in range(10)]
    
    
class Tag(models.Model):
    order = models.IntegerField(choices=get_order_choices)