text: 
  from django.db import models
  from datetime import datetime
  # Create your models here.
  
  class BaseModel(models.Model):
      created_at = models.DateTimeField(default=datetime.now())
      updated_at = models.DateTimeField(null=True, blank=True)
      created_by = models.CharField(blank=True, max_length=250)
      deleted_at = models.DateTimeField(null=True, blank=True)
  
      class Meta:
          abstract = True
  