Use Python to manipulate the 2nd part of the YAML library

YAML ApplicationThe main point here is to document the application of Yaml in the Python language. Compared to the JSON library, the YAML library has strikingly similar similarities. a Load method, a dump method. It is also a good understanding to know the meaning of the name.

Let's start by creating a Yaml file, as shown in:

The following data are stored:

PNSSpouse:    name:jane Smith    - name:jimmy   Smith- Name1:jenny Smith    12

Load usage

 import   Yamlstream  = open ( " test_yaml.yaml  , "  r     ") #   read Yaml file  data = Yaml.load (stream)  print  (Data[ "  Children   "][0]["  name  " ] #   Span style= "COLOR: #008000" > Gets the value corresponding to the first name in the Yaml file children   

Output Result:

C:\Python34\python3.exe e:/project_case/demo1.pyjimmy Smith

The understanding level is understood by the dict in Python.

Dump usage

" "__author__ = ' Fighter007 ' __date__ = ' 2018/2/20 ' __desc__ = YAML application in Python" "Importyamls='I have an apple'Print(Yaml.dump (s)) lists= ['Zhangsan','Lisi','Wangwu','Zhaoliu']Print(Yaml.dump (lists))classPerson (object):def __init__(self, Name, age): Self.name=name Self.age=Agep1= Person ('Zhangsan', 19) P2= Person ('Lisi', 20) P3= Person ('Wangwu'21st) Persons=[P1, p2, p3]Print(Yaml.dump (persons))

Output Result:

I have an apple ... [Zhangsan, Lisi, Wangwu, Zhaoliu] - !! Python/object:__main__. person {age:19, Name:zhangsan}-!! Python/object:__main__. person {age:20, name:lisi}-!! Python/object:__main__. person {age:21, Name:wangwu}

Use Python to manipulate the 2nd part of the YAML library