MatrixManAtYrService commented on issue #22843:
URL: https://github.com/apache/airflow/issues/22843#issuecomment-1092301293
This appears to be the case for any falsey value. Consider this dag:
```python3
@dag
def paramstuff(x, a=Param(2, minimum=0)):
@task
def add(literal, dagparam):
print(literal + dagparam)
add(x, a)
# the_dag = paramstuff(0) # one dag arg, 'add' says:
# AirflowException: No value could be resolved for parameter x
the_dag = paramstuff(3) # two dag args, 'add' says 5
```
I'm not sure how we should treat positional args being passed into `@dag`
decorated functions (I'm tempted to say that they shouldn't interact with
DagParams at all, leave that to the kwargs). But whatever we do, it probably
shouldn't depend on whether those values are falsey.
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