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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 item_prices(pronac, data):
 """ Verify if a project is an outlier compared to the other projects in his segment, based on the price of bought items. """

    threshold = 0.1

    outlier_info = get_outliers_percentage(pronac)
    outlier_info['is_outlier'] = outlier_info['percentage'] > threshold
    outlier_info['maximum_expected'] = threshold * outlier_info['total_items']

    return outlier_info