kaxil commented on issue #56471:
URL: https://github.com/apache/airflow/issues/56471#issuecomment-3451432672
an example could be dynamic Hostname:
Example:
```
class MyCustomOp(BaseOperator):
template_fields = ("env_var", )
def __init__(*args, **kwargs):
self.env_vars = os.environ.copy()
```
And the environ variables on Host had dynamically changing value since it
was running on Pods.
Example:
First try
```
HOSTNAME=awdapla-tyuda-1019-dag-processor-78867d95f9-wdqtx
```
Second parse
```
HOSTNAME=paswda-yeweifr-1019-dag-processor-3423923-qdqt3
```
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