Python-сообщество

Exception Type:	FieldError
Exception Value:	
Cannot resolve keyword 'davlenie__mb' into field. Choices are: davlenie__mb, den, god, id, kod_gvk, mesyats

cmf=globals()[(request.GET['TablicaForm'])]
            if str(cmf)==str(SutPatm):
                lord='davlenie__mb'

class SutPatm(models.Model):
    kod_gvk = models.IntegerField()
    god = models.IntegerField()
    mesyats = models.IntegerField()
    den = models.IntegerField()
    davlenie__mb = models.FloatField()
    class Meta:
        db_table = u'sut_patm'