airflow pythonoperator
时间: 2023-10-17 12:35:13 浏览: 120
Airflow PythonOperator is a task in Apache Airflow that allows you to execute a Python function as a task within an Airflow DAG (Directed Acyclic Graph). It is one of the most commonly used operators in Airflow.
The PythonOperator takes a python_callable argument, which is the function you want to execute, and any other necessary arguments for that function. When the task is executed, Airflow will call the specified Python function and perform the logic inside it.
Here's an example of how to use PythonOperator in an Airflow DAG:
```python
from airflow import DAG
from airflow.operators.python_operator import PythonOperator
from datetime import datetime
def my_python_function():
# Your logic here
print("Hello, I am running inside a PythonOperator")
dag = DAG(
'my_dag',
start_date=datetime(2022, 1, 1),
schedule_interval='@daily'
)
my_task = PythonOperator(
task_id='my_task',
python_callable=my_python_function,
dag=dag
)
```
In this example, we define a DAG called 'my_dag' with a daily schedule interval. We then create a PythonOperator called 'my_task' that executes the function `my_python_function`. Whenever the DAG is triggered, Airflow will execute the logic inside `my_python_function`.
You can add more parameters to the PythonOperator based on your requirements, such as providing arguments to the python_callable function or defining the pool for task execution. The output of the function can also be used by downstream tasks in the DAG.
I hope this answers your question about the Airflow PythonOperator! Let me know if you have any further queries.
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