Read json file and get output values

问题

I want to fetch the output of below json file using python

Json file

{
    "Name": [
        {
            "name": "John",
            "Avg": "55.7"
        },
        {
            "name": "Rose",
            "Avg": "71.23"
        },
        {
            "name": "Lola",
            "Avg": "78.93"
        },
        {
            "name": "Harry",
            "Avg": "95.5"
        }

    ]
}

I want to get the average marks of the person, when I look for harry i.e. I need output in below or similar format

Harry = 95.5

Here's my code

import json

json_file = open('test.json')  //the above contents are stored in the json
data = json.load(json_file)
do = data['Name'][0]
op1 = do['Name']
if op1 is 'Harry':
    print do['Avg']

But when I run I get error IOError: [Errno 63] File name too long.

回答1:

How to print the score of Harry with python 3

import json
from pprint import pprint

with open('test.json') as data_file:
    data = json.load(data_file)

for l in data["Name"]:
    if (str(l['name']) == 'Harry'):
        pprint(l['Avg'])

回答2:

You can do something simple like this

import json

file = open('data.json')
json_data = json.load(file)

stud_list = json_data['Name']
y = {}
for var in stud_list:
    x = {var['name']: var['Avg']}
    y = dict(list(x.items()) + list(y.items()))

print(y)

It gives the output in dictionary format

{'Harry': '95.5', 'Lola': '78.93', 'Rose': '71.23', 'John': '55.7'}

回答3:

json.load loads data from file file-like object. If you want to read it from string you may use json.loads.

来源：https://stackoverflow.com/questions/39492541/read-json-file-and-get-output-values

标签

python

json

ioerror