在JSON(Python)中查找元素的最快方法

Question

我有Json:

[
 {
  "name":"Apple",
  "price":2,
  "have":0,
  "max":36
 },
 {
  "name":"Pineapple",
  "price":5,
  "have":6,
  "max":17
 }
]

我需要最快的功能,接收名称,并发送价格.例如,print(jsonname("Apple"))是2.

PS请不要发布循环答案,我知道它们.我需要快速的方法和方法的名称

Answer 1

这是一个简单的方法:

def function(json_object, name):
    for dict in json_object:
        if dict['name'] == name:
            return dict['price']

如果您确定没有重复的名称,那么更有效(和pythonic)的方法是使用列表推导:

def function(json_object, name):
        return [obj for obj in json_object if obj['name']==name][0]['price']

Answer 2

from json import loads

json = """[
 {
  "name":"Apple",
  "price":2,
  "have":0,
  "max":36
 },
 {
  "name":"Pineapple",
  "price":5,
  "have":6,
  "max":17
 }
]"""

parsedJson = loads (json)

def jsonname (name):
    for entry in parsedJson:
        if name == entry ['name']:
            return entry ['price']