prefect.concurrency.v1.sync
concurrency(names, task_run_id, timeout_seconds=None)
A context manager that acquires and releases concurrency slots from the given concurrency limits.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
names |
Union[str, List[str]]
|
The names of the concurrency limits to acquire. |
required |
task_run_id |
UUID
|
The task run ID acquiring the limits. |
required |
timeout_seconds |
Optional[float]
|
The number of seconds to wait to acquire the limits before
raising a |
None
|
Raises:
Type | Description |
---|---|
TimeoutError
|
If the limits are not acquired within the given timeout. |
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()
Source code in src/prefect/concurrency/v1/sync.py
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