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prefect.concurrency.v1.sync

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Functions

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concurrency 

concurrency(names: Union[str, list[str]], task_run_id: UUID, timeout_seconds: Optional[float] = None) -> Generator[None, None, None]
A context manager that acquires and releases concurrency slots from the given concurrency limits. Args:
  • names: The names of the concurrency limits to acquire.
  • task_run_id: The task run ID acquiring the limits.
  • timeout_seconds: The number of seconds to wait to acquire the limits before raising a TimeoutError. A timeout of None will wait indefinitely.
Raises:
  • TimeoutError: If the limits are not acquired within the given timeout.
Example: A simple example of using the sync concurrency context manager: 
from prefect.concurrency.v1.sync import concurrency

def resource_heavy():
    with concurrency("test"):
        print("Resource heavy task")

def main():
    resource_heavy()
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