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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 config_get(config, *path, default=None):
 """Get a configuration option following a path through the config Example usage: 'problem', 'problem_type_details', 'scorer', default='accuracy') Args: config (dict):
 config dict *path (list[str]):
 List of config sections and options to follow. default (default=None):
 A default value to return in the case that the option does not exist. """

    o = object()
    result = get_in(config, path, default=o)
    if result is not o:
        return result
    else:
        return default