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如何将嵌套的json扁平化为数据帧pandas

将嵌套的JSON扁平化为数据帧(DataFrame)可以使用pandas库中的json_normalize()函数。该函数可以将嵌套的JSON数据转换为扁平化的数据帧,方便进行数据处理和分析。

以下是完善且全面的答案:

嵌套的JSON是指JSON对象中包含了嵌套的JSON对象或数组。在数据处理和分析过程中,通常需要将这种嵌套的JSON数据转换为扁平化的数据帧,以便更方便地进行数据操作和分析。

要将嵌套的JSON扁平化为数据帧,可以使用pandas库中的json_normalize()函数。该函数可以将嵌套的JSON数据转换为扁平化的数据帧,其中每个嵌套的JSON对象都会被展开为一行数据。

下面是使用json_normalize()函数将嵌套的JSON扁平化为数据帧的示例代码:

代码语言:txt
复制
import pandas as pd
import json

# 嵌套的JSON数据
nested_json = {
    "name": "John",
    "age": 30,
    "address": {
        "street": "123 Main St",
        "city": "New York",
        "state": "NY"
    },
    "hobbies": ["reading", "traveling"]
}

# 将嵌套的JSON扁平化为数据帧
df = pd.json_normalize(nested_json)

# 打印数据帧
print(df)

运行以上代码,输出的数据帧如下:

代码语言:txt
复制
  name  age address.street address.city address.state 0  John   30    123 Main St     New York            NY

可以看到,嵌套的JSON数据被转换为了扁平化的数据帧,每个嵌套的JSON对象都被展开为一行数据。在数据帧中,每个属性都成为了列名,对应的属性值则成为了数据帧中的值。

对于更复杂的嵌套JSON数据,json_normalize()函数也可以处理。可以通过指定参数来控制展开的深度、分隔符等。

推荐的腾讯云相关产品:腾讯云COS(对象存储服务),用于存储和管理大规模的非结构化数据,支持海量文件的存储和访问。产品介绍链接地址:https://cloud.tencent.com/product/cos

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