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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def create(self):
 """ Creates the necessary display for this form """

        self.add_handlers({'^E': self.quit, '^Q': self.quit})
        to_delete = self.old_instances - self.new_instances
        self.add(npyscreen.Textfield, value='Select which instances to delete'
                 ' (you must select ' + str(to_delete) +
                 ' instance(s) to delete):', editable=False, color='GOOD')
        self.del_instances = self.add(InstanceSelect,
                                      values=self.cur_instances,
                                      scroll_exit=True, rely=3,
                                      instance_num=to_delete)