my_data=[
{'stationCode': 'NB001',
'summaries': [{'period': {'year': 2017}, 'rainfall': 449},
{'period': {'year': 2018}, 'rainfall': 352.4},
{'period': {'year': 2019}, 'rainfall': 253.2},
{'period': {'year': 2020}, 'rainfall': 283},
{'period': {'year': 2021}, 'rainfall': 104.2}]},
{'stationCode': 'NA003',
'summaries': [{'period': {'year': 2019}, 'rainfall': 58.2},
{'period': {'year': 2020}, 'rainfall': 628.2},
{'period': {'year': 2021}, 'rainfall': 120}]}]
在 Pandas 中我可以：
import pandas as pd
from pandas import json_normalize
pd.concat([json_normalize(entry, 'summaries', 'stationCode')
for entry in my_data])
这会给我下表：
rainfall period.year stationCode
0 449.0 2017 NB001
1 352.4 2018 NB001
2 253.2 2019 …