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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 find_rak():
 """ Find our instance of Rak, navigating Local's and possible blueprints. """

    if hasattr(current_app, 'rak'):
        return getattr(current_app, 'rak')
    else:
        if hasattr(current_app, 'blueprints'):
            blueprints = getattr(current_app, 'blueprints')
            for blueprint_name in blueprints:
                if hasattr(blueprints[blueprint_name], 'rak'):
                    return getattr(blueprints[blueprint_name], 'rak')