python-yaml

示例
相同的数据使用YAML与json表示，对比如下：

• list
  YAML

- Mark McGwire
- Sammy Sosa
- Ken Griffey

JSON

[
  "Mark McGwire", 
  "Sammy Sosa", 
  "Ken Griffey"
]

• list type
  YAML

[Mark McGwire, Tom Curry, Steve Thompson]

JSON

[
  "Mark McGwire", 
  "Tom Curry", 
  "Steve Thompson"
]

• dict
  YAML

hr:  65 
avg: 0.278 
rbi: 147 

JSON

{
  "hr": 65, 
  "avg": 0.27800000000000002, 
  "rbi": 147
}

• dict involve list
  YAML

american:
  - Boston Red Sox
  - Detroit Tigers
  - New York Yankees
national:
  - New York Mets
  - Chicago Cubs
  - Atlanta Braves

JSON

{
  "american": [
    "Boston Red Sox", 
    "Detroit Tigers", 
    "New York Yankees"
  ], 
  "national": [
    "New York Mets", 
    "Chicago Cubs", 
    "Atlanta Braves"
  ]
}

• dict involve dict
  YAML

Mark McGwire: {hr: 65, avg: 0.278}
Sammy Sosa: {
    hr: 63,
    avg: 0.288
  }

JSON

{
  "Sammy Sosa": {
    "hr": 63, 
    "avg": 0.28799999999999998
  }, 
  "Mark McGwire": {
    "hr": 65, 
    "avg": 0.27800000000000002
  }
}

• list involve list
  YAML

- [name        , hr, avg  ]
- [Mark McGwire, 65, 0.278]
- [Sammy Sosa  , 63, 0.288]

JSON

[
  [
    "name", 
    "hr", 
    "avg"
  ], 
  [
    "Mark McGwire", 
    65, 
    0.27800000000000002
  ], 
  [
    "Sammy Sosa", 
    63, 
    0.28799999999999998
  ]
]

• list dict

ymal

selenium_appium: appium
appium:
 - devices: "a"
   Remote: "x"
   port: ""
   appiumjs: ""
 - devices: "a"
   Remote: "x"
   port: ""
   appiumjs: ""

selenium:
 selenium_jar: ""
 sel_remote: ""
 open_url: "

json

{
    "selenium_appium": "appium",
    "appium": [
        {
            "Remote": "x",
            "port": "",
            "devices": "a",
            "appiumjs": ""
        },
        {
            "Remote": "x",
            "port": "",
            "devices": "a",
            "appiumjs": ""
        }
    ],
    "selenium": {
        "open_url": "",
        "selenium_jar": "",
        "sel_remote": ""
    }
}

Ref
Official Site
http://yaml.org/

Wiki
https://zh.wikipedia.org/zh-cn/YAML

YAML中文快速入门，有思维导图
http://www.cnblogs.com/chwkai/archive/2005/10/07/beginning_yaml.html

Online YAML parser (parse YAML to Json/XML)
https://yaml-online-parser.appspot.com/

来自：http://www.cnblogs.com/plwang1990/p/5232084.html