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how to stop the async task runs in flow context? I need to execute a loop in the flow context but I don’t want it to execute the next loop before the first loop is finished. I see the tasks are executed asynchrously. For example:
```with Flow(
    name="ETL",
) as flow:
    page = 0
    max_page = 999999
    while page &lt;= max_page:
        page += 1
        dummy_task()```

I read this in the prefect 2 doc but it seems it’s not available in 1: `Sequential execution` task runner:
```from prefect.task_runners import SequentialTaskRunner```

Hey <@U029S51BLA2> in 1.0 this would be the LocalExecutor
```from prefect.executors import LocalExecutor

flow.executor = LocalExecutor()```
from this article <https://discourse.prefect.io/t/what-is-the-default-taskrunner-executor/63>