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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 determine_final_config(config_module):
 """Determines the final additions and replacements. Combines the config module with the defaults. Args: config_module: The loaded local configuration module. Returns: Config: the final configuration. """

    config = Config(
        DEFAULT_LIBRARY_RC_ADDITIONS, DEFAULT_LIBRARY_RC_REPLACEMENTS,
        DEFAULT_TEST_RC_ADDITIONS, DEFAULT_TEST_RC_REPLACEMENTS)

    for field in config._fields:
        if hasattr(config_module, field):
            config = config._replace(**{field: getattr(config_module, field)})

    return config