old_contents: from openerp import api, models, fields, api, _
  
  '''
  This module create model of Course
  '''
  
  
  class Course(models.Model):
      '''
      This class create model of Course
      '''
      _name = 'openacademy.course'  # Model odoo name
  
      name = fields.Char(string='Title', required=True)
      description = fields.Text(string='Description')
      responsible_id = fields.Many2one('res.users',
                                       ondelete='set null',
                                       string="Responsible",
                                       index=True)
  
      session_ids = fields.One2many('openacademy.session',
                                    'course_id', string="Sessions")
  
      _sql_constraints = [
          ('name_description_check',
           'CHECK(name != description)',
           _("The title of the course should not be the description")),
  
          ('name_unique',
           'UNIQUE(name)',
           _("The course title must be unique")),
      ]
  
      @api.multi
      def copy(self, default=None):
  
          default = dict(default or {})
          copied_count = self.search_count([('name',
                                             '=like',
                                             u"Copy of {}%".format(self.name)])
  
          if not copied_count:
              new_name = _(u"Copy of {}").format(self.name)
          else:
              new_name = _(u"Copy of {} ({})").format(self.name, copied_count)
  
          default['name'] = new_name
          return super(Course, self).copy(default)
  
new_contents: from openerp import api, models, fields, api, _
  
  '''
  This module create model of Course
  '''
  
  
  class Course(models.Model):
      '''
      This class create model of Course
      '''
      _name = 'openacademy.course'  # Model odoo name
  
      name = fields.Char(string='Title', required=True)
      description = fields.Text(string='Description')
      responsible_id = fields.Many2one('res.users',
                                       ondelete='set null',
                                       string="Responsible",
                                       index=True)
  
      session_ids = fields.One2many('openacademy.session',
                                    'course_id', string="Sessions")
  
      _sql_constraints = [
          ('name_description_check',
           'CHECK(name != description)',
           _("The title of the course should not be the description")),
  
          ('name_unique',
           'UNIQUE(name)',
           _("The course title must be unique")),
      ]
  
      @api.multi
      def copy(self, default=None):
  
          default = dict(default or {})
          copied_count = self.search_count([('name',
                                             '=like',
                                             u"Copy of {}%".format(self.name))])
  
          if not copied_count:
              new_name = _(u"Copy of {}").format(self.name)
          else:
              new_name = _(u"Copy of {} ({})").format(self.name, copied_count)
  
          default['name'] = new_name
          return super(Course, self).copy(default)
  
subject: Edit invalid syntax