airflow/models/dagrun.py
def get_task_instance(self, task_id, session=None):
        """
        Returns the task instance specified by task_id for this dag run

        :param task_id: the task id
        """

        from airflow.models.taskinstance import TaskInstance  # Avoid circular import
        TI = TaskInstance
        ti = session.query(TI).filter(
            TI.dag_id == self.dag_id,
            TI.execution_date == self.execution_date,
            TI.task_id == task_id
        ).first()

        return ti
def get_task_instance(self, task_id, session=None):
        from airflow.models.taskinstance import TaskInstance  # Avoid circular import
        TI = TaskInstance
        ti = session.query(TI).filter(
            TI.dag_id == self.dag_id,
            TI.execution_date == self.execution_date,
            TI.task_id == task_id
        ).first()

        return ti
def get_task_instance ( self , task_id , session = None ) : from airflow . models . taskinstance import TaskInstance # Avoid circular import TI = TaskInstance ti = session . query ( TI ) . filter ( TI . dag_id == self . dag_id , TI . execution_date == self . execution_date , TI . task_id == task_id ) . first ( ) return ti
Returns the task instance specified by task_id for this dag run

        :param task_id: the task id
Returns the task instance specified by task_id for this dag run