如何解决奇怪的嵌套字典
我正在尝试访问嵌套的字典,问题是字典中的每个obj都有一个不同的数字,其中有一个键,里面的键也一样,这是json来源:
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我正在尝试访问符号和徽标,但我只能通过键入1个obj来做到这一点
{
"100": {
"status": {
"timestamp": "2020-10-12T23:24:26.146Z","error_code": 0,"error_message": null,"elapsed": 19,"credit_count": 1,"notice": null
},"data": {
"100": {
"id": 100,"name": "Particle","symbol": "PRT","category": "coin","description": "/`enter code here`","slug": "particle","logo": "https://s2.coinmarketcap.com/static/img/coins/64x64/100.png","subreddit": "","notice": "","tags": ["mineable"],"tag-names": ["mineable"],"tag-groups": ["OTHER"],"urls": {
"website": ["http://www.bitparticle.com/"],"twitter": [],"message_board": [],"chat": [],"explorer": ["http://chaincollider.bitparticle.com/chain/Particle/"],"reddit": [],"technical_doc": [],"source_code": [],"announcement": []
},"platform": null,"date_added": "2014-01-22T00:00:00.000Z","twitter_username": "","is_hidden": 0
}
}
}
我的最终目标是拥有一个完整的列表,其中包含每个obj的徽标和符号。
解决方法
您可以仅循环访问字典中的键,然后访问这些键后面的值:
for k1 in json_file:
for k2 in json_file[k1]["data"]:
symbol = json_file[k1]["data"][k2]["symbol"]
...
如果只想列出所有符号,还可以使用嵌套列表理解:
>>> [json_file[k1]["data"][k2]["symbol"] for k1 in json_file for k2 in json_file[k1]["data"]]
['PRT']
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