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https://issues.apache.org/jira/browse/AIRFLOW-4374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17417228#comment-17417228
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ASF GitHub Bot commented on AIRFLOW-4374:
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potiuk closed pull request #5302:
URL: https://github.com/apache/airflow/pull/5302
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> Inherit from Enum
> -----------------
>
> Key: AIRFLOW-4374
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4374
> Project: Apache Airflow
> Issue Type: Sub-task
> Components: core
> Reporter: Bas Harenslak
> Assignee: Bas Harenslak
> Priority: Minor
>
> Python 3.4 introduced the Enum type, which can reduce the complexity of a few
> enum-style classes. E.g. the TriggerRule could become:
> {code:java}
> from enum import Enum
> class TriggerRule(Enum):
> ALL_SUCCESS = "all_success"
> ALL_FAILED = "all_failed"
> ALL_DONE = "all_done"
> ONE_SUCCESS = "one_success"
> ONE_FAILED = "one_failed"
> NONE_FAILED = "none_failed"
> NONE_SKIPPED = "none_skipped"
> DUMMY = "dummy"
> @classmethod
> def all_triggers(cls):
> return [tr.name for tr in TriggerRule]
> {code}
> A quick scan showed me enum-like class are TriggerRule, WeightRule, -State-,
> but there might be more, so search first.
> Also, note this is optional and not required for running in Python 3.
>
> Edit: not touching the State in this one, since state contains additional
> attributes (e.g. state_color) and in Python Enum all attributes are part of
> the Enum class, which we don't want in this case. Will have to rethink this
> one.
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