dhuang opened a new pull request #6793: [AIRFLOW-1076] Add get method for template variable accessor URL: https://github.com/apache/airflow/pull/6793 Support getting variables in templates by string. This is necessary when fetching variables with characters not allowed in a class attribute name. We can then also support returning default values when a variable does not exist. Original PR went stale, https://github.com/apache/airflow/pull/2223. Make sure you have checked _all_ steps below. ### Jira - [x] My PR addresses the following [Airflow Jira](https://issues.apache.org/jira/browse/AIRFLOW/) issues and references them in the PR title. For example, "\[AIRFLOW-XXX\] My Airflow PR" - https://issues.apache.org/jira/browse/AIRFLOW-1076 ### Description - [x] Here are some details about my PR, including screenshots of any UI changes: - See above. ### Tests - [x] My PR adds the following unit tests __OR__ does not need testing for this extremely good reason: - Added unit tests for calling `var.value.get()` and `var.json.get()`, with or without default ### Commits - [x] My commits all reference Jira issues in their subject lines, and I have squashed multiple commits if they address the same issue. In addition, my commits follow the guidelines from "[How to write a good git commit message](http://chris.beams.io/posts/git-commit/)": 1. Subject is separated from body by a blank line 1. Subject is limited to 50 characters (not including Jira issue reference) 1. Subject does not end with a period 1. Subject uses the imperative mood ("add", not "adding") 1. Body wraps at 72 characters 1. Body explains "what" and "why", not "how" ### Documentation - [x] In case of new functionality, my PR adds documentation that describes how to use it.
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