取消嵌套json数据

Question

我正在寻找一个json对象的嵌套。有两种方法可以做到这一点（当然可以简化事情）–一种方法是压缩数据，另一种方法是重复数据。使用一个非常基本的示例：

d = {
    "ID": 12345,
    "Genres": {
      "Genre": [
        {
            "[@FacebookID]": "6003161475030",
            "Value": "Comedy"
        },
        {
            "[@FacebookID]": "6003172932634",
            "Value": "TV-Show"
        }
      ]
    }

第一种冷凝方法将执行以下操作：

d = {
    "Genres.Genre[@FacebookID]": ["6003161475030", "6003172932634"]
    "Genres.Genre.Value": ["Comedy", "TV-Show"]    
}

重复的第二种方法可以做到：

d = [{
    "ID": 12345,
    "Genres": {
      "Genre": {
            "[@FacebookID]": "6003161475030",
            "Value": "Comedy"
        }
      }
 },[{
    "ID": 12345,
    "Genres": {
      "Genre": {
            "[@FacebookID]": "6003172932634",
            "Value": "TV-Show"
        }
      }
 }]

给出以下json数据结构：

{
    "Item": {
        "ID": "288917",
        "Main": {
            "Platform": "iTunes",
            "PlatformID": "353736518",
            "Type": "TVEpisode",
            "TVSeriesID": "262603760"
        },
        "Info": {
            "BaseURL": "https://itunes.apple.com/us/tv-season/id353187108?i=353736518",
            "EpisodeNumber": "5"
        },
        "Genres": {
            "Genre": [
                {
                    "[@FacebookID]": "6003161475030",
                    "Value": "Comedy"
                },
                {
                    "[@FacebookID]": "6003172932634",
                    "Value": "TV-Show"
                }
            ]
        },
        "Products": {
            "Product": [
                {
                    "[@Country]": "CA",
                    "URL": "https://itunes.apple.com/ca/tv-season/id353187108?i=353736518",
                    "Offers": {
                        "Offer": [
                            {
                                "[@Type]": "HDBUY",
                                "Price": {
                                    "[@InUSD]": "2.56",
                                    "Value": "3.49"
                                },
                                "Currency": "CAD"
                            },
                            {
                                "[@Type]": "SDBUY",
                                "Price": {
                                    "[@InUSD]": "1.83",
                                    "Value": "2.49"
                                },
                                "Currency": "CAD"
                            }
                        ]
                    }
                },
                {
                    "[@Country]": "FR",
                    "URL": "https://itunes.apple.com/fr/tv-season/id353187108?i=353736518",
                    "Rating": "Tout public",
                    "Offers": {
                        "Offer": [
                            {
                                "[@Type]": "HDBUY",
                                "Price": {
                                    "[@InUSD]": "2.85",
                                    "Value": "2.49"
                                },
                                "Currency": "EUR"
                            },
                            {
                                "[@Type]": "SDBUY",
                                "Price": {
                                    "[@InUSD]": "2.28",
                                    "Value": "1.99"
                                },
                                "Currency": "EUR"
                            }
                        ]
                    }
                }
            ]
        }
    }
}

我希望能够调用一个根据设置压缩或展平字段的函数。这将是输出示例：

# default unnest method is condense
unnest(data, repeated_fields=['Genre', 'Products.Product[@Country]', 'Products.Product.Offers.Offer[@Type]')

结果将是（并解释了第一项）：

# contains four objects instead of one, because we have repeated on
# two fields, each of those having two values.
[{
    "ID": 288917,
    "Main.Platform": "iTunes",
    "Main.PlatformID": "353736518",

    # use default unnest method of condense if not specified
    "Genres.Genre": ["Comedy", "TV-Show"],
    "Genres.Genre[@FacebookID]": ["6003161475030", "6003161475030"],

    # unnest by repeating as it's specified
    "Product.Product[@Country]": "CA"
    "Products.Product.URL": "https://itunes.apple.com/ca/tv-season/id353187108?i=353736518",

    # again, we unnest by repeating since this has been specified
    "Products.Product.Offers.Offer[@Type]": "HDBUY"
    "Products.Product.Offers.Offer.Price": "3.49"
    "Products.Product.Offers.Offer.Currency": "CAD"

},

{
    "ID": 288917,
    "Main.Platform": "iTunes",
    "Main.PlatformID": "353736518",
    "Genres.Genre": ["Comedy", "TV-Show"],
    "Genres.Genre[@FacebookID]": ["6003161475030", "6003161475030"],
    "Product.Product[@Country]": "CA"
    "Products.Product.URL": "https://itunes.apple.com/ca/tv-season/id353187108?i=353736518",
    "Products.Product.Offers.Offer[@Type]": "SDBUY"
    "Products.Product.Offers.Offer.Price": "2.49"
    "Products.Product.Offers.Offer.Currency": "CAD"

},
{
    "ID": 288917,
    "Main.Platform": "iTunes",
    "Main.PlatformID": "353736518",
    "Genres.Genre": ["Comedy", "TV-Show"],
    "Genres.Genre[@FacebookID]": ["6003161475030", "6003161475030"],
    "Product.Product[@Country]": "FR"
    "Products.Product.URL": "https://itunes.apple.com/fr/tv-season/id353187108?i=353736518",
    "Products.Product.Offers.Offer[@Type]": "HDBUY"
    "Products.Product.Offers.Offer.Price": "2.49"
    "Products.Product.Offers.Offer.Currency": "EUR"

},
{
    "ID": 288917,
    "Main.Platform": "iTunes",
    "Main.PlatformID": "353736518",
    "Genres.Genre": ["Comedy", "TV-Show"],
    "Genres.Genre[@FacebookID]": ["6003161475030", "6003161475030"],
    "Product.Product[@Country]": "FR"
    "Products.Product.URL": "https://itunes.apple.com/fr/tv-season/id353187108?i=353736518",
    "Products.Product.Offers.Offer[@Type]": "SDBUY"
    "Products.Product.Offers.Offer.Price": "1.99"
    "Products.Product.Offers.Offer.Currency": "EUR"

}]

我的方法是对每个重复的字段使用一堆deepcopy格。这是我到目前为止的示例，它凝聚了所有非重复的字段。