papermill

This DAG will use Papermill to run the notebook “hello_world”, based on the execution date it will create an output notebook “out-<date>”. All fields, including the keys in the parameters, are templated.

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"""
This DAG will use Papermill to run the notebook "hello_world", based on the execution date
it will create an output notebook "out-<date>". All fields, including the keys in the parameters, are
templated.
"""
import os
from datetime import timedelta
import scrapbook as sb
from airflow import DAG
from airflow.lineage import AUTO
from airflow.operators.python import PythonOperator
from airflow.providers.papermill.operators.papermill import PapermillOperator
from airflow.utils.dates import days_ago
default_args = {
'owner': 'airflow',
}
with DAG(
dag_id='example_papermill_operator',
default_args=default_args,
schedule_interval='0 0 * * *',
start_date=days_ago(2),
dagrun_timeout=timedelta(minutes=60),
tags=['example'],
) as dag_1:
# [START howto_operator_papermill]
run_this = PapermillOperator(
task_id="run_example_notebook",
input_nb="/tmp/hello_world.ipynb",
output_nb="/tmp/out-{{ execution_date }}.ipynb",
parameters={"msgs": "Ran from Airflow at {{ execution_date }}!"},
)
# [END howto_operator_papermill]
def check_notebook(inlets, execution_date):
"""
Verify the message in the notebook
"""
notebook = sb.read_notebook(inlets[0].url)
message = notebook.scraps['message']
print(f"Message in notebook {message} for {execution_date}")
if message.data != f"Ran from Airflow at {execution_date}!":
return False
return True
with DAG(
dag_id='example_papermill_operator_2',
default_args=default_args,
schedule_interval='0 0 * * *',
start_date=days_ago(2),
dagrun_timeout=timedelta(minutes=60),
) as dag_2:
run_this = PapermillOperator(
task_id="run_example_notebook",
input_nb=os.path.join(os.path.dirname(os.path.realpath(__file__)), "input_notebook.ipynb"),
output_nb="/tmp/out-{{ execution_date }}.ipynb",
parameters={"msgs": "Ran from Airflow at {{ execution_date }}!"},
)
check_output = PythonOperator(task_id='check_out', python_callable=check_notebook, inlets=AUTO)
check_output.set_upstream(run_this)
Last Updated by mik-lajmik-laj