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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 parse_relative_path(root_path, experiment_config, key):
    '''Change relative path to absolute path'''
    if experiment_config.get(key) and not os.path.isabs(experiment_config.get(key)):
        absolute_path = os.path.join(root_path, experiment_config.get(key))
        print_normal('expand %s: %s to %s ' % (key, experiment_config[key], absolute_path))
        experiment_config[key] = absolute_path