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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 sort_items(items):
 """sorts the items into a dictionary of categories, with a list of items"""


    sorted_items = {}
    for item in items:
        category = lookup(item, 'itemCategory', 'categoryCode')
        if sorted_items.get(category) is None:
            sorted_items[category] = []
        sorted_items[category].append(item)

    return sorted_items