ashb commented on a change in pull request #6473: [AIRFLOW-5819] Update
AWSBatchOperator default value
URL: https://github.com/apache/airflow/pull/6473#discussion_r340871679
##########
File path: airflow/contrib/operators/awsbatch_operator.py
##########
@@ -83,7 +83,7 @@ class AWSBatchOperator(BaseOperator):
template_fields = ('job_name', 'overrides',)
@apply_defaults
- def __init__(self, job_name, job_definition, job_queue, overrides,
array_properties=None,
+ def __init__(self, job_name, job_definition, job_queue, overrides,
array_properties={},
Review comment:
You shouldn't do it like this.
https://docs.python-guide.org/writing/gotchas/#mutable-default-arguments
Instead in the method do
```
self.array_properties = array_properties if array_properties is not
None else {}
```
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