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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def execute_work_items(work_items, config):
 """Execute a suite of tests for a given set of work items. Args: work_items: An iterable of `work_db.WorkItem`s. config: The configuration to use for the test execution. Returns: An iterable of WorkItems. """

    return celery.group(
        worker_task.s(work_item, config)
        for work_item in work_items
    )