ashb commented on code in PR #74773:
URL: https://github.com/apache/airflow/pull/74773#discussion_r4315450394
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airflow-core/docs/authoring-and-scheduling/loops.rst:
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@@ -82,7 +82,9 @@ loop body must be keyword-only and cannot have a default
other than ``None``.
In a templated field, a Jinja ``{% for %}`` block defines its own ``loop``
that hides this one for
the length of the block. Read the Airflow value before the block and use that
inside it, for example
-``{% set iteration = loop.index %}``.
+``{% set iteration = loop.index %}``. Both count from one, so ``loop.index``
reads the same either
+way, but Jinja's loop also offers ``loop.index0`` and Airflow's does not:
outside a ``{% for %}``
+block ``loop.index0`` raises an ``AttributeError``, and inside one it is
Jinja's own counter.
Review Comment:
Yes this is true, but I don't think we should confuse people with Jinja's
loop behaviour, other than just "it might collide".
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