Example Email Operator Usage with Attachment

example_email_op.py

from airflow.models import DAG
from airflow.operators.email_operator import EmailOperator
from airflow.operators.python_operator import PythonOperator
from datetime import datetime
from tempfile import NamedTemporaryFile


dag = DAG(
    "email_example",
    description="Sample Email Example with File attachments",
    schedule_interval="@daily",
    start_date=datetime(2018, 12, 7),
    catchup=False,
)


def build_email(**context):
    with NamedTemporaryFile(mode='w+', suffix=".txt") as file:
        file.write("Hello World")

        email_op = EmailOperator(
            task_id='send_email',
            to="hello@example.com",
            subject="Test Email Please Ignore",
            html_content=None,
            files=[file.name],
        )
        email_op.execute(context)


email_op_python = PythonOperator(
    task_id="python_send_email", python_callable=build_email, provide_context=True, dag=dag
)

when I try to use the EmailOperator, I am getting below error
ERROR - No module named 'email_backend = airflow'

May I know What I am missing in my implementation

@touseefzaki
You probably need to config it in airflow.cfg, it is in your airflow_home directory

What are the configuration changes that are to be done? No errors and no mail

what is the alternate for this as EmailOperator is gone now.

PendingDeprecationWarning: Fetching SMTP credentials from configuration variables will be deprecated in a future release. Please set credentials using a connection instead.

In airflow.cfg, use this:
email_backend = airflow.utils.email.send_email_smtp
so that you can use this:
from airflow.operators.email_operator import EmailOperator

can we attache file in email from GCS any bucket

How can we attach file present in other GCS bucket ( not in composer env bucket) in the email.

How can I attach a csv file present in a s3 bucket to Airflow EmailOperator?? Is it possible ? or Is it like we can send a file from local temp folder ? Please help