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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 get_local_output_dir():
 """Create a local output directory per execution. We've seen occassional (1/100000) perm issues with lambda on temp directory and changing unix execution users (2015-2018), so use a per execution temp space. With firecracker lambdas this may be outdated. """

    output_dir = os.environ.get('C7N_OUTPUT_DIR', '/tmp/' + str(uuid.uuid4()))
    if not os.path.exists(output_dir):
        try:
            os.mkdir(output_dir)
        except OSError as error:
            log.warning("Unable to make output directory: {}".format(error))
    return output_dir