如何通过嵌套在列表中的键从字典中获取元素？

Question

I have construction like this:

[{
    "meta": {
        "foo": 1, 
        "bar": "string", 
        "baz": "string2"},
    "data": [
        {"id": "1", "quant": 2, "price": 3.14},
        {"id": "2", "quant": 1, "price": 6.66}
    ]
 },
...
]

How can I get elements foo, bar from meta and quant, price from data?

Answer 1

Welcome to SO, We are not code writing services so please post your effort next time you ask question. Refer to the documentation for more information on python Data Sructures.

lists are accessed through index , and Dictionaries are accessed through `keys'

Like _list[index] and _dict['key'] With that basics lets move forward.

l= [{ "meta":{ "foo":1, "bar":"string", "baz":"string2"}, "data":[ {"id":"1", "quant":2, "price":3.14}, {"id":"2", "quant":1, "price":6.66}] } ]

>>> l[0]['meta']['foo']
1
>>> l[0]['meta']['bar']
'string'

>>> l[0]['data'][0]['price']
3.14
>>> l[0]['data'][0]['quant']
2
>>> 

>>> l[0]['data'][1]['quant']
1
>>> l[0]['data'][1]['price']
6.66
>>>