Question 322218 in Json Question posted in
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how to use python jsonpath_ng filter nested data

need to find dict in [] , according specific value , but cannot find.
which I hope return value is
[{ "uid": {"type": "t2", "id": "world"}, "attrs": { "value": 456 } }]

import json
from jsonpath_ng.ext import parse

json_str = '''[
{
  "uid": {"type": "t1", "id": "hello"},
  "attrs": {
    "value": 123
  }
},
{
  "uid": {"type": "t2", "id": "world"},
  "attrs": {
    "value": 456
  }
}
]
'''
json_obj = json.loads(json_str)
[match.value for match in parse('$.[*].attrs[?value > 200]').find(json_obj)]
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2

Answers


  1. Chosen as BEST ANSWER
    0

    I find how to use jsonpath_ng.ext to `parse'

    [match.value for match in parse('$[?attrs.value > 200]').find(json_obj)]

  2. 0

    Try like this

    import json
from jsonpath_ng import parse

json_str = '''
[
    {
        "uid": {"type": "t1", "id": "hello"},
        "attrs": {
            "value": 123
        }
    },
    {
        "uid": {"type": "t2", "id": "world"},
        "attrs": {
            "value": 456
        }
    }
]
'''

json_obj = json.loads(json_str)
expr = parse('$.[*]')
matches = [match.value for match in expr.find(json_obj) if match.value['attrs']['value'] > 200]
print(matches)

    Output:

    [{'uid': {'type': 't2', 'id': 'world'}, 'attrs': {'value': 456}}]
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