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Hi all!
I am trying to retreive time taken for @task and Flow(  ) How to retreive/monitor start and end times of flow in the code. Is there any built in functions?

No the UI calculates the duration on the fly (for Prefect 1.0) so you need to query the GraphQL API and then to `end_time` - `start_time` with some further processing

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what I wanted to do was to create  function and use it with tasks anotated @time . Is that recommended?

`@task` returns a class. Can you try switching the order of the decorators?

I have module not callable error? Is that about @Task?

<@U02GMEZU18B> could you share your alternative to the double decorator here?

```from prefect import Flow
from prefect.tasks.core.function import FunctionTask
from time import sleep, time
from typing import Any, Callable

class timed_task(FunctionTask):
    def __init__(
        self,
        fn: Callable = None,
        name: str = None,
        **kwargs: Any
    ):
        def timed_fn(**kwargs) -&gt; Callable:
            t1 = time()
            result = fn(**kwargs)
            t2 = time()
            print(f'Function {fn.__name__!r} executed in {(t2-t1):.4f}s')
            return result
        
        super().__init__(fn=timed_fn, name=name, **kwargs)

@timed_task
def my_func() -&gt; None:
    sleep(10)
 
with Flow('My Timed Flow') as flow:
    my_func()

if __name__ == "__main__":
    flow.run()```