ashb commented on a change in pull request #21326:
URL: https://github.com/apache/airflow/pull/21326#discussion_r799639210
##########
File path: airflow/providers/ssh/operators/ssh.py
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@@ -18,15 +18,16 @@
import warnings
from base64 import b64encode
-from select import select
-from typing import Optional, Sequence, Tuple, Union
-
-from paramiko.client import SSHClient
+from typing import TYPE_CHECKING, Optional, Sequence, Union
from airflow.configuration import conf
from airflow.exceptions import AirflowException
from airflow.models import BaseOperator
-from airflow.providers.ssh.hooks.ssh import SSHHook
+
+if TYPE_CHECKING:
+ from paramiko.client import SSHClient
+
+ from airflow.providers.ssh.hooks.ssh import SSHHook
Review comment:
Not strictly required, it just means DAG parsing has to import less.
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