code: def get_course_enrollments(self, enterprise_customer, days):
          
          return CourseEnrollment.objects.filter(
              created__gt=datetime.datetime.now() - datetime.timedelta(days=days)
          ).filter(
              user_id__in=enterprise_customer.enterprise_customer_users.values_list('user_id', flat=True)
          )
docs: Get course enrollments for all the learners of given enterprise customer.
  
          Arguments:
              enterprise_customer (EnterpriseCustomer): Include Course enrollments for learners
                  of this enterprise customer.
              days (int): Include course enrollment of this number of days.
  
          Returns:
              (list): A list of CourseEnrollment objects.