gistfile1.py

# models.py

class NamedFloat(models.Model):
    col1 = models.CharField(max_length=1, primary_key=True)
    col2 = models.FloatField(blank=True, null=True)
    
# test:
@pytest.mark.django_db
def test_floatfield():
    class Table(tables.Table):
        class Meta:
            model = NamedFloat

    NamedFloat.objects.create(col1='a', col2=2.2)
    NamedFloat.objects.create(col1='b', col2=6.0)

    table = Table(NamedFloat.objects.all())
    request = build_request('/')
    RequestConfig(request, {'per_page': 2}).configure(table)

    template = Template('{% load django_tables2 %}{% render_table table %}')
    html = template.render(Context(dict(request=request, table=table)))