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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 run_operator(operator, revision, config):
 """Run an operator for the multiprocessing pool. Not called directly."""

    instance = operator.cls(config)
    logger.debug(f"Running {operator.name} operator on {revision.key}")
    return operator.name, instance.run(revision, config)