[GitHub] [airflow] feluelle commented on a change in pull request #5127: [AIRFLOW-4343] Show warning in UI if scheduler is not running

[GitBox <gi...@apache.org>]

feluelle commented on a change in pull request #5127: [AIRFLOW-4343] Show warning in UI if scheduler is not running
URL: https://github.com/apache/airflow/pull/5127#discussion_r276790453
 
 

 ##########
 File path: airflow/macros/__init__.py
 ##########
 @@ -67,6 +67,23 @@ def ds_format(ds, input_format, output_format):
     return datetime.strptime(ds, input_format).strftime(output_format)
 
 
+def datetime_diff_for_humans(dt, since=None):
+    """
+    Return a human-readable/approximate difference between two datetimes, or
+    one and now.
+
+    :param dt: The datetime to display the diff for
+    :type dt: datetime
+    :param since: When to display the date from. If ``None`` then the diff is
+        between ``dt`` and now.
+    :type from: None or datetime
 
 Review comment:
   ```suggestion
       :type since: None or datetime
   ```

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