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[example][s] Airflow CSV to JSON converter #6

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Jun 10, 2020
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40 changes: 40 additions & 0 deletions examples/csv_to_json.py
Original file line number Diff line number Diff line change
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import os
import time
import pandas as pd


from pprint import pprint

from airflow import DAG
from airflow.operators.python_operator import PythonOperator
from airflow.operators.python_operator import PythonVirtualenvOperator
from airflow.utils.dates import days_ago

args = {
'owner': 'airflow',
'start_date': days_ago(2),
}

dag = DAG(
dag_id='cs_to_json',
default_args=args,
schedule_interval=None,
tags=['conversion']
)


def convert(input, output, **kwargs):
print('Starting file conversion')
df = pd.read_csv(input)
df.to_json(output)
print('End file conversion')


convert_task = PythonOperator(
task_id="convert_to_json",
provide_context=True,
python_callable=convert,
op_kwargs={'input': "/path/to/my.csv",
'output': "/path/to/my.json"},
dag=dag
)
Empty file added examples/files/airflow.db
Empty file.