2.3 使用 json.tool 来格式化 JSON

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假设现在你需要查看你机器上的json文件，而这个文件没有经过任何的美化，阅读起来是非常困难的。

$ cat demo.json
{"_id":"5f12d319624e57e27d1291fe","index":0,"guid":"4e482708-c6aa-4ef9-a45e-d5ce2c72c68d","isActive":false,"balance":"$2,954.93","picture":"http://placehold.it/32x32","age":36,"eyeColor":"green","name":"MasseySaunders","gender":"male","company":"TALAE","email":"masseysaunders@talae.com","phone":"+1(853)508-3237","address":"246IndianaPlace,Glenbrook,Iowa,3896","about":"Velitmagnanostrudexcepteurduisextemporirurefugiataliquasunt.Excepteurvelitquiseuinexinoccaecatoccaecatveliteuet.Commodonisialiquipirureminimconsequatminimconsecteturipsumsitex.\r\n","registered":"2017-02-06T06:42:20-08:00","latitude":-10.269827,"longitude":-103.12419,"tags":["laborum","excepteur","veniam","reprehenderit","voluptate","laborum","in"],"friends":[{"id":0,"name":"DorotheaShields"},{"id":1,"name":"AnnaRosales"},{"id":2,"name":"GravesBryant"}],"greeting":"Hello,MasseySaunders!Youhave8unreadmessages.","favoriteFruit":"apple"}

这时候你就可以使用 python 的命令行来直接美化。

$ python -m json.tool demo.json
{
    "_id": "5f12d319624e57e27d1291fe",
    "about": "Velitmagnanostrudexcepteurduisextemporirurefugiataliquasunt.Excepteurvelitquiseuinexinoccaecatoccaecatveliteuet.Commodonisialiquipirureminimconsequatminimconsecteturipsumsitex.\r\n",
    "address": "246IndianaPlace,Glenbrook,Iowa,3896",
    "age": 36,
    "balance": "$2,954.93",
    "company": "TALAE",
    "email": "masseysaunders@talae.com",
    "eyeColor": "green",
    "favoriteFruit": "apple",
    "friends": [
        {
            "id": 0,
            "name": "DorotheaShields"
        },
        {
            "id": 1,
            "name": "AnnaRosales"
        },
        {
            "id": 2,
            "name": "GravesBryant"
        }
    ],
    "gender": "male",
    "greeting": "Hello,MasseySaunders!Youhave8unreadmessages.",
    "guid": "4e482708-c6aa-4ef9-a45e-d5ce2c72c68d",
    "index": 0,
    "isActive": false,
    "latitude": -10.269827,
    "longitude": -103.12419,
    "name": "MasseySaunders",
    "phone": "+1(853)508-3237",
    "picture": "http://placehold.it/32x32",
    "registered": "2017-02-06T06:42:20-08:00",
    "tags": [
        "laborum",
        "excepteur",
        "veniam",
        "reprehenderit",
        "voluptate",
        "laborum",
        "in"
    ]
}

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