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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_epoch_namespace_lifetime_multiplier( block_height, namespace_id ):
 """ what's the namespace lifetime multipler for this epoch? """

    epoch_config = get_epoch_config( block_height )
    if epoch_config['namespaces'].has_key(namespace_id):
        return epoch_config['namespaces'][namespace_id]['NAMESPACE_LIFETIME_MULTIPLIER']
    else:
        return epoch_config['namespaces']['*']['NAMESPACE_LIFETIME_MULTIPLIER']