将复杂的 JSON 映射到 Pandas Dataframe

Question

背景
我有一个复杂的嵌套 JSON 对象，我试图df以一种非常具体的方式将其解压到 pandas 中。

\n

JSON 对象
这是一个摘录，包含 JSON 对象的随机数据，其中显示了 1x 家族（即“Falconer Family”）的层次结构示例（包括子项），但是总共有 100 个，此摘录只有 1x 系列，但是完整的 JSON 对象有多个 -

\n

{\n    "meta": {\n        "columns": [{\n                "key": "value",\n                "display_name": "Adjusted Value (No Div, USD)",\n                "output_type": "Number",\n                "currency": "USD"\n            },\n            {\n                "key": "time_weighted_return",\n                "display_name": "Current Quarter TWR (USD)",\n                "output_type": "Percent",\n                "currency": "USD"\n            },\n            {\n                "key": "time_weighted_return_2",\n                "display_name": "YTD TWR (USD)",\n                "output_type": "Percent",\n                "currency": "USD"\n            },\n            {\n                "key": "_custom_twr_audit_note_911328",\n                "display_name": "TWR Audit Note",\n                "output_type": "Word"\n            }\n        ],\n        "groupings": [{\n                "key": "_custom_name_747205",\n                "display_name": "* Reporting Client Name"\n            },\n            {\n                "key": "_custom_new_entity_group_453577",\n                "display_name": "NEW Entity Group"\n            },\n            {\n                "key": "_custom_level_2_624287",\n                "display_name": "* Level 2"\n            },\n            {\n                "key": "legal_entity",\n                "display_name": "Legal Entity"\n            }\n        ]\n    },\n    "data": {\n        "type": "portfolio_views",\n        "attributes": {\n            "total": {\n                "name": "Total",\n                "columns": {\n                    "time_weighted_return": -0.046732301295604683,\n                    "time_weighted_return_2": -0.046732301295604683,\n                    "_custom_twr_audit_note_911328": null,\n                    "value": 23132492.905107163\n                },\n                "children": [{\n                    "name": "Falconer Family",\n                    "grouping": "_custom_name_747205",\n                    "columns": {\n                        "time_weighted_return": -0.046732301295604683,\n                        "time_weighted_return_2": -0.046732301295604683,\n                        "_custom_twr_audit_note_911328": null,\n                        "value": 23132492.905107163\n                    },\n                    "children": [{\n                            "name": "Wealth Bucket A",\n                            "grouping": "_custom_new_entity_group_453577",\n                            "columns": {\n                                "time_weighted_return": -0.045960317420568164,\n                                "time_weighted_return_2": -0.045960317420568164,\n                                "_custom_twr_audit_note_911328": null,\n                                "value": 13264448.506587159\n                            },\n                            "children": [{\n                                    "name": "Asset Class A",\n                                    "grouping": "_custom_level_2_624287",\n                                    "columns": {\n                                        "time_weighted_return": 0.000003434094574039648,\n                                        "time_weighted_return_2": 0.000003434094574039648,\n                                        "_custom_twr_audit_note_911328": null,\n                                        "value": 3337.99\n                                    },\n                                    "children": [{\n                                        "entity_id": 10604454,\n                                        "name": "HUDJ Trust",\n                                        "grouping": "legal_entity",\n                                        "columns": {\n                                            "time_weighted_return": 0.000003434094574039648,\n                                            "time_weighted_return_2": 0.000003434094574039648,\n                                            "_custom_twr_audit_note_911328": null,\n                                            "value": 3337.99\n                                        },\n                                        "children": []\n                                    }]\n                                },\n                                {\n                                    "name": "Asset Class B",\n                                    "grouping": "_custom_level_2_624287",\n                                    "columns": {\n                                        "time_weighted_return": -0.025871339096964152,\n                                        "time_weighted_return_2": -0.025871339096964152,\n                                        "_custom_twr_audit_note_911328": null,\n                                        "value": 1017004.7192636987\n                                    },\n                                    "children": [{\n                                        "entity_id": 10604454,\n                                        "name": "HUDG Trust",\n                                        "grouping": "legal_entity",\n                                        "columns": {\n                                            "time_weighted_return": -0.025871339096964152,\n                                            "time_weighted_return_2": -0.025871339096964152,\n                                            "_custom_twr_audit_note_911328": null,\n                                            "value": 1017004.7192636987\n                                        },\n                                        "children": []\n                                    }]\n                                },\n                                {\n                                    "name": "Asset Class C",\n                                    "grouping": "_custom_level_2_624287",\n                                    "columns": {\n                                        "time_weighted_return": -0.030370376329670656,\n                                        "time_weighted_return_2": -0.030370376329670656,\n                                        "_custom_twr_audit_note_911328": null,\n                                        "value": 231142.67772000004\n                                    },\n                                    "children": [{\n                                        "entity_id": 10604454,\n                                        "name": "HKDJ Trust",\n                                        "grouping": "legal_entity",\n                                        "columns": {\n                                            "time_weighted_return": -0.030370376329670656,\n                                            "time_weighted_return_2": -0.030370376329670656,\n                                            "_custom_twr_audit_note_911328": null,\n                                            "value": 231142.67772000004\n                                        },\n                                        "children": []\n                                    }]\n                                },\n                                {\n                                    "name": "Asset Class D",\n                                    "grouping": "_custom_level_2_624287",\n                                    "columns": {\n                                        "time_weighted_return": -0.05382756475465478,\n                                        "time_weighted_return_2": -0.05382756475465478,\n                                        "_custom_twr_audit_note_911328": null,\n                                        "value": 9791282.570000006\n                                    },\n                                    "children": [{\n                                        "entity_id": 10604454,\n                                        "name": "HUDW Trust",\n                                        "grouping": "legal_entity",\n                                        "columns": {\n                                            "time_weighted_return": -0.05382756475465478,\n                                            "time_weighted_return_2": -0.05382756475465478,\n                                            "_custom_twr_audit_note_911328": null,\n                                            "value": 9791282.570000006\n                                        },\n                                        "children": []\n                                    }]\n                                },\n                                {\n                                    "name": "Asset Class E",\n                                    "grouping": "_custom_level_2_624287",\n                                    "columns": {\n                                        "time_weighted_return": -0.01351630404081805,\n                                        "time_weighted_return_2": -0.01351630404081805,\n                                        "_custom_twr_audit_note_911328": null,\n                                        "value": 2153366.6396034593\n                                    },\n                                    "children": [{\n                                        "entity_id": 10604454,\n                                        "name": "HJDJ Trust",\n                                        "grouping": "legal_entity",\n                                        "columns": {\n                                            "time_weighted_return": -0.01351630404081805,\n                                            "time_weighted_return_2": -0.01351630404081805,\n                                            "_custom_twr_audit_note_911328": null,\n                                            "value": 2153366.6396034593\n                                        },\n                                        "children": []\n                                    }]\n                                },\n                                {\n                                    "name": "Asset Class F",\n                                    "grouping": "_custom_level_2_624287",\n                                    "columns": {\n                                        "time_weighted_return": -0.002298190175237247,\n                                        "time_weighted_return_2": -0.002298190175237247,\n                                        "_custom_twr_audit_note_911328": null,\n                                        "value": 68313.90999999999\n                                    },\n                                    "children": [{\n                                        "entity_id": 10604454,\n                                        "name": "HADJ Trust",\n                                        "grouping": "legal_entity",\n                                        "columns": {\n                                            "time_weighted_return": -0.002298190175237247,\n                                            "time_weighted_return_2": -0.002298190175237247,\n                                            "_custom_twr_audit_note_911328": null,\n                                            "value": 68313.90999999999\n                                        },\n                                        "children": []\n                                    }]\n                                }\n                            ]\n                        },\n                        {\n                            "name": "Wealth Bucket B",\n                            "grouping": "_custom_new_entity_group_453577",\n                            "columns": {\n                                "time_weighted_return": -0.04769870075659244,\n                                "time_weighted_return_2": -0.04769870075659244,\n                                "_custom_twr_audit_note_911328": null,\n                                "value": 9868044.398519998\n                            },\n                            "children": [{\n                                    "name": "Asset Class A",\n                                    "grouping": "_custom_level_2_624287",\n                                    "columns": {\n                                        "time_weighted_return": 0.000028632718065191298,\n                                        "time_weighted_return_2": 0.000028632718065191298,\n                                        "_custom_twr_audit_note_911328": null,\n                                        "value": 10234.94\n                                    },\n                                    "children": [{\n                                            "entity_id": 10868778,\n                                            "name": "2012 Desc Tr HBO Thalia",\n                                            "grouping": "legal_entity",\n                                            "columns": {\n                                                "time_weighted_return": 0.0000282679297198829,\n                                                "time_weighted_return_2": 0.0000282679297198829,\n                                                "_custom_twr_audit_note_911328": null,\n                                                "value": 244.28\n                                            },\n                                            "children": []\n                                        },\n                                        {\n                                            "entity_id": 10643052,\n                                            "name": "2013 Irrev Tr HBO Thalia",\n                                            "grouping": "legal_entity",\n                                            "columns": {\n                                                "time_weighted_return": 0.000049373572795108345,\n                                                "time_weighted_return_2": 0.000049373572795108345,\n                                                "_custom_twr_audit_note_911328": null,\n                                                "value": 5081.08\n                                            },\n                                            "children": []\n                                        },\n                                        {\n                                            "entity_id": 10598341,\n                                            "name": "Cht 11th Tr HBO Shirley",\n                                            "grouping": "legal_entity",\n                                            "columns": {\n                                                "time_weighted_return": 0.000006609603754315074,\n                                                "time_weighted_return_2": 0.000006609603754315074,\n                                                "_custom_twr_audit_note_911328": null,\n                                                "value": 1523.62\n                                            },\n                                            "children": []\n                                        },\n                                        {\n                                            "entity_id": 10598337,\n                                            "name": "Cht 11th Tr HBO Hannah",\n                                            "grouping": "legal_entity",\n                                            "columns": {\n                                                "time_weighted_return": 0.000010999769004760296,\n                                                "time_weighted_return_2": 0.000010999769004760296,\n                                                "_custom_twr_audit_note_911328": null,\n                                                "value": 1828.9\n                                            },\n                                            "children": []\n                                        },\n                                        {\n                                            "entity_id": 10598334,\n                                            "name": "Cht 11th Tr HBO Lau",\n                                            "grouping": "legal_entity",\n                                            "columns": {\n                                                "time_weighted_return": 0.000006466673995619843,\n                                                "time_weighted_return_2": 0.000006466673995619843,\n                                                "_custom_twr_audit_note_911328": null,\n                                                "value": 1557.06\n                                            },\n                                            "children": []\n                                        }\n                                    ]\n                                },\n                                {\n                                    "name": "Asset Class B",\n                                    "grouping": "_custom_level_2_624287",\n                                    "columns": {\n                                        "time_weighted_return": -0.024645947842438676,\n                                        "time_weighted_return_2": -0.024645947842438676,\n                                        "_custom_twr_audit_note_911328": null,\n                                        "value": 674052.31962\n                                    },\n                                    "children": [{\n                                            "entity_id": 10868778,\n                                            "name": "2012 Desc Tr HBO Thalia",\n                                            "grouping": "legal_entity",\n                                            "columns": {\n                                                "time_weighted_return": -0.043304004172576405,\n                                                "time_weighted_return_2": -0.043304004172576405,\n                                                "_custom_twr_audit_note_911328": null,\n                                                "value": 52800.96\n                                            },\n                                            "children": []\n                                        },\n                                        {\n                                            "entity_id": 10643052,\n                                            "name": "2013 Irrev Tr HBO Thalia",\n                                            "grouping": "legal_entity",\n                                            "columns": {\n                                                "time_weighted_return": -0.022408434778798836,\n                                                "time_weighted_return_2": -0.022408434778798836,\n                                                "_custom_twr_audit_note_911328": null,\n                                                "value": 599594.11962\n                                            },\n                                            "children": []\n                                        },\n                                        {\n                                            "entity_id": 10598341,\n                                            "name": "Cht 11th Tr HBO Shirley",\n                                            "grouping": "legal_entity",\n                                            "columns": {\n                                                "time_weighted_return": -0.039799855483646174,\n                                                "time_weighted_return_2": -0.039799855483646174,\n                                                "_custom_twr_audit_note_911328": null,\n                                                "value": 7219.08\n                                            },\n                                            "children": []\n                                        },\n                                   

    

Answer 1

jsonpath-ng甚至可以非常轻松地解析这样的嵌套 json 对象。您可以通过以下命令安装这个方便的库：

\n

pip install --upgrade jsonpath-ng\n

\n

代码：

\n

import json\nimport jsonpath_ng as jp\nimport pandas as pd\n\ndef unpack_response(r):\n    # Create a dataframe from extracted data\n    expr = jp.parse(\'$..children.[*]\')\n    data = [{\'full_path\': str(m.full_path), **m.value} for m in expr.find(r)]\n    df = pd.json_normalize(data).sort_values(\'full_path\', ignore_index=True)\n\n    # Append a portfolio column\n    df[\'portfolio\'] = df.loc[df.full_path.str.contains(r\'total\\.children\\.\\[\\d+]$\'), \'name\']\n    df[\'portfolio\'].fillna(method=\'ffill\', inplace=True)\n\n    # Deal with columns\n    trans = {\'columns.\' + c[\'key\']: c[\'display_name\'] for c in r[\'meta\'][\'columns\']}\n    cols = [\'full_path\', \'portfolio\', \'name\', \'entity_id\', \'Adjusted Value (No Div, USD)\', \'Current Quarter TWR (USD)\', \'YTD TWR (USD)\', \'TWR Audit Note\']\n    df = df.rename(columns=trans)[cols]\n\n    return df\n\n# Load the sample data from file\n# with open(\'api_response_2022-02-13.json\', \'r\') as f:\n#     api_response = json.load(f)\n\n# Load the sample data from string\napi_response = json.loads(\'{"meta": {"columns": [{"key": "value", "display_name": "Adjusted Value (No Div, USD)", "output_type": "Number", "currency": "USD"}, {"key": "time_weighted_return", "display_name": "Current Quarter TWR (USD)", "output_type": "Percent", "currency": "USD"}, {"key": "time_weighted_return_2", "display_name": "YTD TWR (USD)", "output_type": "Percent", "currency": "USD"}, {"key": "_custom_twr_audit_note_911328", "display_name": "TWR Audit Note", "output_type": "Word"}], "groupings": [{"key": "_custom_name_747205", "display_name": "* Reporting Client Name"}, {"key": "_custom_new_entity_group_453577", "display_name": "NEW Entity Group"}, {"key": "_custom_level_2_624287", "display_name": "* Level 2"}, {"key": "legal_entity", "display_name": "Legal Entity"}]}, "data": {"type": "portfolio_views", "attributes": {"total": {"name": "Total", "columns": {"time_weighted_return": -0.046732301295604683, "time_weighted_return_2": -0.046732301295604683, "_custom_twr_audit_note_911328": null, "value": 23132492.905107163}, "children": [{"name": "Falconer Family", "grouping": "_custom_name_747205", "columns": {"time_weighted_return": -0.046732301295604683, "time_weighted_return_2": -0.046732301295604683, "_custom_twr_audit_note_911328": null, "value": 23132492.905107163}, "children": [{"name": "Wealth Bucket A", "grouping": "_custom_new_entity_group_453577", "columns": {"time_weighted_return": -0.045960317420568164, "time_weighted_return_2": -0.045960317420568164, "_custom_twr_audit_note_911328": null, "value": 13264448.506587159}, "children": [{"name": "Asset Class A", "grouping": "_custom_level_2_624287", "columns": {"time_weighted_return": 3.434094574039648e-06, "time_weighted_return_2": 3.434094574039648e-06, "_custom_twr_audit_note_911328": null, "value": 3337.99}, "children": [{"entity_id": 10604454, "name": "HUDJ Trust", "grouping": "legal_entity", "columns": {"time_weighted_return": 3.434094574039648e-06, "time_weighted_return_2": 3.434094574039648e-06, "_custom_twr_audit_note_911328": null, "value": 3337.99}, "children": []}]}, {"name": "Asset Class B", "grouping": "_custom_level_2_624287", "columns": {"time_weighted_return": -0.025871339096964152, "time_weighted_return_2": -0.025871339096964152, "_custom_twr_audit_note_911328": null, "value": 1017004.7192636987}, "children": [{"entity_id": 10604454, "name": "HUDG Trust", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.025871339096964152, "time_weighted_return_2": -0.025871339096964152, "_custom_twr_audit_note_911328": null, "value": 1017004.7192636987}, "children": []}]}, {"name": "Asset Class C", "grouping": "_custom_level_2_624287", "columns": {"time_weighted_return": -0.030370376329670656, "time_weighted_return_2": -0.030370376329670656, "_custom_twr_audit_note_911328": null, "value": 231142.67772000004}, "children": [{"entity_id": 10604454, "name": "HKDJ Trust", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.030370376329670656, "time_weighted_return_2": -0.030370376329670656, "_custom_twr_audit_note_911328": null, "value": 231142.67772000004}, "children": []}]}, {"name": "Asset Class D", "grouping": "_custom_level_2_624287", "columns": {"time_weighted_return": -0.05382756475465478, "time_weighted_return_2": -0.05382756475465478, "_custom_twr_audit_note_911328": null, "value": 9791282.570000006}, "children": [{"entity_id": 10604454, "name": "HUDW Trust", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.05382756475465478, "time_weighted_return_2": -0.05382756475465478, "_custom_twr_audit_note_911328": null, "value": 9791282.570000006}, "children": []}]}, {"name": "Asset Class E", "grouping": "_custom_level_2_624287", "columns": {"time_weighted_return": -0.01351630404081805, "time_weighted_return_2": -0.01351630404081805, "_custom_twr_audit_note_911328": null, "value": 2153366.6396034593}, "children": [{"entity_id": 10604454, "name": "HJDJ Trust", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.01351630404081805, "time_weighted_return_2": -0.01351630404081805, "_custom_twr_audit_note_911328": null, "value": 2153366.6396034593}, "children": []}]}, {"name": "Asset Class F", "grouping": "_custom_level_2_624287", "columns": {"time_weighted_return": -0.002298190175237247, "time_weighted_return_2": -0.002298190175237247, "_custom_twr_audit_note_911328": null, "value": 68313.90999999999}, "children": [{"entity_id": 10604454, "name": "HADJ Trust", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.002298190175237247, "time_weighted_return_2": -0.002298190175237247, "_custom_twr_audit_note_911328": null, "value": 68313.90999999999}, "children": []}]}]}, {"name": "Wealth Bucket B", "grouping": "_custom_new_entity_group_453577", "columns": {"time_weighted_return": -0.04769870075659244, "time_weighted_return_2": -0.04769870075659244, "_custom_twr_audit_note_911328": null, "value": 9868044.398519998}, "children": [{"name": "Asset Class A", "grouping": "_custom_level_2_624287", "columns": {"time_weighted_return": 2.8632718065191298e-05, "time_weighted_return_2": 2.8632718065191298e-05, "_custom_twr_audit_note_911328": null, "value": 10234.94}, "children": [{"entity_id": 10868778, "name": "2012 Desc Tr HBO Thalia", "grouping": "legal_entity", "columns": {"time_weighted_return": 2.82679297198829e-05, "time_weighted_return_2": 2.82679297198829e-05, "_custom_twr_audit_note_911328": null, "value": 244.28}, "children": []}, {"entity_id": 10643052, "name": "2013 Irrev Tr HBO Thalia", "grouping": "legal_entity", "columns": {"time_weighted_return": 4.9373572795108345e-05, "time_weighted_return_2": 4.9373572795108345e-05, "_custom_twr_audit_note_911328": null, "value": 5081.08}, "children": []}, {"entity_id": 10598341, "name": "Cht 11th Tr HBO Shirley", "grouping": "legal_entity", "columns": {"time_weighted_return": 6.609603754315074e-06, "time_weighted_return_2": 6.609603754315074e-06, "_custom_twr_audit_note_911328": null, "value": 1523.62}, "children": []}, {"entity_id": 10598337, "name": "Cht 11th Tr HBO Hannah", "grouping": "legal_entity", "columns": {"time_weighted_return": 1.0999769004760296e-05, "time_weighted_return_2": 1.0999769004760296e-05, "_custom_twr_audit_note_911328": null, "value": 1828.9}, "children": []}, {"entity_id": 10598334, "name": "Cht 11th Tr HBO Lau", "grouping": "legal_entity", "columns": {"time_weighted_return": 6.466673995619843e-06, "time_weighted_return_2": 6.466673995619843e-06, "_custom_twr_audit_note_911328": null, "value": 1557.06}, "children": []}]}, {"name": "Asset Class B", "grouping": "_custom_level_2_624287", "columns": {"time_weighted_return": -0.024645947842438676, "time_weighted_return_2": -0.024645947842438676, "_custom_twr_audit_note_911328": null, "value": 674052.31962}, "children": [{"entity_id": 10868778, "name": "2012 Desc Tr HBO Thalia", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.043304004172576405, "time_weighted_return_2": -0.043304004172576405, "_custom_twr_audit_note_911328": null, "value": 52800.96}, "children": []}, {"entity_id": 10643052, "name": "2013 Irrev Tr HBO Thalia", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.022408434778798836, "time_weighted_return_2": -0.022408434778798836, "_custom_twr_audit_note_911328": null, "value": 599594.11962}, "children": []}, {"entity_id": 10598341, "name": "Cht 11th Tr HBO Shirley", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.039799855483646174, "time_weighted_return_2": -0.039799855483646174, "_custom_twr_audit_note_911328": null, "value": 7219.08}, "children": []}, {"entity_id": 10598337, "name": "Cht 11th Tr HBO Hannah", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.039799855483646174, "time_weighted_return_2": -0.039799855483646174, "_custom_twr_audit_note_911328": null, "value": 7219.08}, "children": []}, {"entity_id": 10598334, "name": "Cht 11th Tr HBO Lau", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.039799855483646174, "time_weighted_return_2": -0.039799855483646174, "_custom_twr_audit_note_911328": null, "value": 7219.08}, "children": []}]}, {"name": "Asset Class C", "grouping": "_custom_level_2_624287", "columns": {"time_weighted_return": -0.03037038746301135, "time_weighted_return_2": -0.03037038746301135, "_custom_twr_audit_note_911328": null, "value": 114472.69744}, "children": [{"entity_id": 10868778, "name": "2012 Desc Tr HBO Thalia", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.030370390035505124, "time_weighted_return_2": -0.030370390035505124, "_custom_twr_audit_note_911328": null, "value": 114472.68744000001}, "children": []}, {"entity_id": 10643052, "name": "2013 Irrev Tr HBO Thalia", "grouping": "legal_entity", "columns": {"time_weighted_return": 0, "time_weighted_return_2": 0, "_custom_twr_audit_note_911328": null, "value": 0.01}, "children": []}]}, {"name": "Asset Class D", "grouping": "_custom_level_2_624287", "columns": {"time_weighted_return": -0.06604362523792162, "time_weighted_return_2": -0.06604362523792162, "_custom_twr_audit_note_911328": null, "value": 5722529.229999997}, "children": [{"entity_id": 10868778, "name": "2012 Desc Tr HBO Thalia", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.06154960593668424, "time_weighted_return_2": -0.06154960593668424, "_custom_twr_audit_note_911328": null, "value": 1191838.9399999995}, "children": []}, {"entity_id": 10643052, "name": "2013 Irrev Tr HBO Thalia", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.06750460387418267, "time_weighted_return_2": -0.06750460387418267, "_custom_twr_audit_note_911328": null, "value": 4416618.520000002}, "children": []}, {"entity_id": 10598341, "name": "Cht 11th Tr HBO Shirley", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.05604507809250081, "time_weighted_return_2": -0.05604507809250081, "_custom_twr_audit_note_911328": null, "value": 38190.33}, "children": []}, {"entity_id": 10598337, "name": "Cht 11th Tr HBO Hannah", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.05604507809250081, "time_weighted_return_2": -0.05604507809250081, "_custom_twr_audit_note_911328": null, "value": 37940.72}, "children": []}, {"entity_id": 10598334, "name": "Cht 11th Tr HBO Lau", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.05604507809250081, "time_weighted_return_2": -0.05604507809250081, "_custom_twr_audit_note_911328": null, "value": 37940.72}, "children": []}]}, {"name": "Asset Class E", "grouping": "_custom_level_2_624287", "columns": {"time_weighted_return": -0.017118805423322003, "time_weighted_return_2": -0.017118805423322003, "_custom_twr_audit_note_911328": null, "value": 3148495.0914600003}, "children": [{"entity_id": 10868778, "name": "2012 Desc Tr HBO Thalia", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.015251157805867277, "time_weighted_return_2": -0.015251157805867277, "_custom_twr_audit_note_911328": null, "value": 800493.06146}, "children": []}, {"entity_id": 10643052, "name": "2013 Irrev Tr HBO Thalia", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.01739609576880241, "time_weighted_return_2": -0.01739609576880241, "_custom_twr_audit_note_911328": null, "value": 2215511.2700000005}, "children": []}, {"entity_id": 10598341, "name": "Cht 11th Tr HBO Shirley", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.02085132265594647, "time_weighted_return_2": -0.02085132265594647, "_custom_twr_audit_note_911328": null, "value": 44031.21}, "children": []}, {"entity_id": 10598337, "name": "Cht 11th Tr HBO Hannah", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.02089393244695803, "time_weighted_return_2": -0.02089393244695803, "_custom_twr_audit_note_911328": null, "value": 44394.159999999996}, "children": []}, {"entity_id": 10598334, "name": "Cht 11th Tr HBO Lau", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.020607507059866248, "time_weighted_return_2": -0.020607507059866248, "_custom_twr_audit_note_911328": null, "value": 44065.39000000001}, "children": []}]}, {"name": "Asset Class F", "grouping": "_custom_level_2_624287", "columns": {"time_weighted_return": -0.0014710489231547497, "time_weighted_return_2": -0.0014710489231547497, "_custom_twr_audit_note_911328": null, "value": 198260.12}, "children": [{"entity_id": 10868778, "name": "2012 Desc Tr HBO Thalia", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.0014477244560456848, "time_weighted_return_2": -0.0014477244560456848, "_custom_twr_audit_note_911328": null, "value": 44612.33}, "children": []}, {"entity_id": 10643052, "name": "2013 Irrev Tr HBO Thalia", "grouping": "legal_entity", "columns": {"time_weighted_return": -0.001477821083437858, "time_weighted_return_2": -0.001477821083437858, "_custom_twr_audit_note_911328": null, "value": 153647.78999999998}, "children": []}]}]}]}]}}, "included": []}}\')\n\ndf = unpack_response(api_response)\n

\n

解释：

\n

首先，您可以通过以下命令确认预期输出：

\n

print(df.iloc[:5:,1:])\n

\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n \n\n\n\n\n\n\n\n\n\n

文件夹	姓名	实体ID	调整值（无 Div，美元）	本季度 TWR（美元）	年初至今 TWR（美元）	TWR审计记录
福尔科纳家族	福尔科纳家族	南	2.31325e+07	-0.0467323	-0.0467323
福尔科纳家族	财富桶A	南	1.32644e+07	-0.0459603	-0.0459603
福尔科纳家族	A类资产	南	3337.99	3.43409e-06	3.43409e-06
福尔科纳家族	HUDJ 信托基金	1.06045e+07	3337.99	3.43409e-06	3.43409e-06
福尔科纳家族	B类资产	南	1.017e+06	-0.0258713	-0.0258713

\n

\n

jsonpath-ng随后，您可以通过以下命令看到其中的精彩功能之一：

\n

print(df.iloc[:10,:3])\n

\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n \n\n\n\n\n\n\n\n\n\n\n

完整路径	文件夹	姓名
数据.attributes.total.children.[0]	福尔科纳家族	福尔科纳家族
data.attributes.total.children.[0].children.[0]	福尔科纳家族	财富桶A
data.attributes.total.children.[0].children.[0].children.[0]	福尔科纳家族	A类资产
data.attributes.total.children.[0].children.[0].children.[0].children.[0]	福尔科纳家族	HUDJ 信托基金
data.attributes.total.children.[0].children.[0].children.[1]	福尔科纳家族	B类资产
data.attributes.total.children.[0].children.[0].children.[1].children.[0]	福尔科纳家族	HUDG信托
data.attributes.total.children.[0].children.[0].children.[2]	福尔科纳家族	C类资产
data.attributes.total.children.[0].children.[0].children.[2].children.[0]	福尔科纳家族	香港DJ信托
data.attributes.total.children.[0].children.[0].children.[3]	福尔科纳家族	资产类别 D
data.attributes.total.children.[0].children.[0].children.[3].children.[0]	福尔科纳家族	HUDW 信托

\n

\n

借助该full_path列，您可以即时掌握每行中提取的数据的嵌套级别。实际上，我portfolio通过使用这些路径附加了正确的值。

\n

就代码而言，关键点在于以下行：

\n

expr = jp.parse(\'$..children.[*]\')\n

\n

通过上面的表达式，可以查询childrenjson对象任意级别的属性。README.rst告诉您每种语法代表什么。

\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

句法	意义
$	根对象
jsonpath1 .. jsonpath2	与 jsonpath2 匹配且源自与 jsonpath1 匹配的任何节点的所有节点
[*]	任意数组索引

归档时间：	4 年 前
查看次数：	1759 次
最近记录：	3 年，12 月 前

相关归档

Pandas DataFrame Groupby两列并获得计数 138

Golang结构的XML和JSON标记？ 30

如何在Delphi中解析JSON字符串？ 16

ServiceStack.Text如何将类序列化为JSon 12

如何将Index转换成列表？ 11

如何使用PHP的jQuery/AJAX调用迭代JSON数组？ 8

如何根据部分匹配选择DataFrame列？ 8

检查数组中的元素是否存在于 pandas DataFrame 中 8

删除仅与其他列中的一个值相关的行 pandas 5

n列减法 3

难疑归档

如何确定最初克隆本地Git存储库的URL？ 3782

如何确定数组是否包含Java中的特定值？ 2194

'using'指令应该在命名空间的内部还是外部？ 1975

在PostgreSQL中显示表格 1703

Java是否支持默认参数值？ 1569

使用JavaScript/jQuery滚动到页面顶部？ 1511

<快于<=？ 1508

你如何存放未跟踪的文件？ 1287

最优雅的方法来检查Python中的字符串是否为空？ 1282

Vim中的remap,noremap,nnoremap和vnoremap映射命令有什么区别？ 1045