无法正确读取另存为json文件的字典

Question

我无法将我保存的字典正确读入数据框  作为json文件。密钥似乎已损坏。不确定是否  问题是使用json.dump()或pd.read_json()。我想要  键是最左侧的列，但似乎混入了一个时间  数据类型。我有以下字典：

t1 = {
    "666020888022790149": {
        "contributors": None,
        "coordinates":  None,
        "created_at": "Sun Nov 15 22:32:08 +0000 2015"},
    "666029285002620928": {
        "contributors": None,
        "coordinates": None,
        "created_at": "Sun Nov 15 23:05:30 +0000 2015"},
    "666033412701032449": {
        "contributors": None,
        "coordinates": None,
        "created_at": "Sun Nov 15 23:21:54 +0000 2015",
            }
}

代码：

import json
import pandas as pd

with open('test1', 'w') as f:  
    json.dump(t1, f,
              sort_keys = True,
              indent=4)

df = pd.read_json('test1',orient='index')
df.head(3)

输出：

Answer 1

只要告诉熊猫不要转换轴即可

result = pd.read_json('test1', orient='index', convert_axes=False)
#                    contributors  coordinates          created_at
#666020888022790149           NaN          NaN 2015-11-15 22:32:08
#666029285002620928           NaN          NaN 2015-11-15 23:05:30
#666033412701032449           NaN          NaN 2015-11-15 23:21:54

索引的类型为字符串：

result.index.dtype
#dtype('O')

请注意，“ test1”是CSV文件的错误名称。 “ test1.csv”要好得多。