import jmespath

data = {

"people": [

    {"name": "a", "state": {"name": "up"} },

    {"name": "b", "state": {"name": "down"} },

    {"name": "c", "state": {"name": "up"} }

]

 }

#ans = jmespath.search('people[0].[name, state.name]', data)

#ans = jmespath.search('people[].[name, state.name]', data)

# ans = jmespath.search('people[].{new_name: name, state_name: state.name}', data)

ans = jmespath.search('people[0].name', data)

# print(ans)

print(jmespath.search('people.*', data))

# https://zhuanlan.zhihu.com/p/458112358

data = [1, 2, 3, 4, 5, 6, 7, 8, 9]

# 所有元素

print(jmespath.search('[]', data) ) # [1, 2, 3, 4, 5, 6, 7, 8, 9]

print(jmespath.search('[*]', data) ) # [1, 2, 3, 4, 5, 6, 7, 8, 9]

jmespath.search('[:]', data)  # [1, 2, 3, 4, 5, 6, 7, 8, 9]

# 部分数据

print(jmespath.search('[5:8]', data) ) # [6, 7, 8]

jmespath.search('[::-1]', data)  # [9, 8, 7, 6, 5, 4, 3, 2, 1]

jmespath.search('[8:1:-2]', data)  # [9, 7, 5, 3]

data = {"a": "foo", "b": "bar", "c": "baz"}

print(jmespath.search('a', data))  # "foo"

data = {"a": {"b": {"c": {"d": "value"}}}}

print(jmespath.search('a.b.c.d', data) ) # "value"

data = {"a": {

  "b": {

    "c": [

      {"d": [0, [1, 2]]},

      {"d": [3, 4]}

    ]

  }

}}

print(jmespath.search('a.b.c[0].d[1][0]', data) ) # 1

data = {

  "ops": {

    "functionA": {"numArgs": 2},

    "functionB": {"numArgs": 3},

    "functionC": {"variadic": True}

  }

}

print(jmespath.search('ops.*.numArgs', data))  # [2, 3]

data = {

    "machines": [

        {"name": "a", "state": "running"},

        {"name": "b", "state": "stopped"},

        {"name": "b", "state": "running"}

    ]

}

jmespath.search("machines[?state=='running'].name", data)  # ['a', 'b']

data = {

    "people": [

        {"first": "James", "last": "d"},

        {"first": "James", "last": "e"},

        {"first": "Jayden", "last": "f"},

        {"missing": "different"}

    ],

    "foo": {"bar": "baz"}

}

print(jmespath.search("people[?first=='James'] ", data) ) # [{'first': 'James', 'last': 'd'}, {'first': 'James', 'last': 'e'}]

print(jmespath.search("people[?first=='James'] | [?last=='e'] ", data) ) # [{'first': 'James', 'last': 'e'}]

print(jmespath.search("people[?first=='James'] | [?last=='e'] | [0]", data) ) # {'first': 'James', 'last': 'e'}