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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 load(config):
 """Loads a stacker configuration by modifying sys paths, loading lookups, etc. Args: config (:class:`Config`):
 the stacker config to load. Returns: :class:`Config`: the stacker config provided above. """


    if config.sys_path:
        logger.debug("Appending %s to sys.path.", config.sys_path)
        sys.path.append(config.sys_path)
        logger.debug("sys.path is now %s", sys.path)
    if config.lookups:
        for key, handler in config.lookups.items():
            register_lookup_handler(key, handler)

    return config