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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_perf_iops_price(package, size, iops):
 """Find the price in the given package with the specified size and iops :param package: The Performance product package :param size: The size of storage space for which an IOPS price is desired :param iops: The number of IOPS for which a price is desired :return: Returns the price for the size and IOPS, or an error if not found """

    for item in package['items']:
        if int(item['capacity']) != int(iops):
            continue

        price_id = _find_price_id(item['prices'], 'performance_storage_iops', 'STORAGE_SPACE', size)
        if price_id:
            return price_id

    raise ValueError("Could not find price for iops for the given volume")