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This article mainly introduced the writing Python script to convert the SQLAlchemy object to the Dict tutorial, mainly based on the Python model class constructs a transformation method, needs the friend to be possible to refer to under
When using SQLAlchemy to write Web applications, often use JSON to communicate, wi
number, 0.9465901444615425random.shuffle ([1, 2, 3, 4, 5, 6]) #随机打乱list的值, can only be list
JSON functions
Use JSON functions to import the JSON library: importJSON.
Function
Describe
Json.dumps
Convert a dictionary to a JSON string
Compile a Python script to convert a sqlAlchemy object to a dict tutorial, pythonsqlalchemy
When using sqlAlchemy to write a web application, it often uses json for communication. The object closest to json is dict. Sometimes it is more convenient to operate dict than to operate ORM objects, after all, you don't have
# from Urllib Import request## F=request.urlopen ("http://123.178.101.29:81/xs_main.aspx?xh=201512102028")## RESULT=STR (F.read (), encoding= ' gb2312 ')# Print (Result)#json. Loads used to convert a dictionary, a list, a tuple form string, to a corresponding amount dictionary, a list, a tuple#利用json把字符串变成字典# s= ' {"name": "Guo", "Age": 18} '# import
{"People":[ {"FirstName": "brett" , " lastname ": " mclaughlin "}, {" ": " jason ", " lastname" hunter" }]}
Introduction to JSON
JSON is a lightweight format for data interchange
Text format that is completely independent of the programming language to store and represent data
The simple and clear hierarchy makes JSON an ideal data
a Python object.The JSON type corresponds to the Python primitive type as shown in the following tableUsing the Json.dumps method, you can convert a Python object to a JSON object, and the Json.dumps method provides a number of u
The JSON module is a very important module that enables cross-platform data exchange between any language, and enables the persistence of some relatively simple data types. (The persistence here is to put Python's simple data types, such as strings, lists, tuples, dictionaries and the like, into the standard format of the JSON string, saved to the hard disk.) )
JSON
This article mainly introduces the use of JSON in Python. the sample code is based on Python2.x. For more information, see
JSON advanced
Python dict objects can be directly serialized into JSON {}. However, many times we prefer to use class to represent objects, such as def
first, the basic knowledge of this section1. Progressive reading of files for in open ('E:\Demo\python\json.txt'): Print Line2. Parsing JSON stringsThere are built-in modules in Python that make it very easy to convert a JSON string into a
JSON processing:JSON is a data type that is common in all languages, like a dictionary in Python, and JSON is used with JSON modules, which have the following common methods: Key-valueImport JSON: #dump/dumps Usage: both of the same points are translated into
Example of how to parse a json file in python,
Preface
JSON (JavaScript Object Notation) is a lightweight data exchange format. It is based on a subset of JavaScript (Standard ECMA-262 3rd Edition-December 1999. JSON uses a completely language-independent text format, but it also uses a habit similar to the C language
First, what is JSON? JSON is a lightweight format for data interchange Second, Python's thinking of working with JSON In fact, it is easy to understand the data into JSON format data and bar JSON format data parsing out Third, the specific method of
is a method for converting Chinese characters into pinyin.
View method to return Json
Def get (self): param = request. args id = param ['id'] # If the id is empty, the system queries rootMenus = queryByParent (id) rootMenuDtos = model_list_2_dto_list (rootMenus, "MenuDto (id ='', menu_name = '', menu_url ='', type = '', parent ='', subMenus = '')") # Set sub-menus for menu in rootMenuDtos: menu. name = to_pinyin (menu. menu_name) subMenus = queryByP
/bin/env Python#coding=utf8import jsonrandom = (5, [1, 2], "tom\" is Good ", (1, 2), 1.5, True, None) jsonobj = JSON.D Umps (Random) #输出 [5, [1, 2], U ' Tom ' is Good ', [1, 2], 1.5, True, None]print json.loads (jsonobj)
This is to encode a data JSON before decoding the encoded data. Logically, the decoded data should be the same as the original data, but we find that the tuple objects are replaced with li
test interfaces not available in other syntax analyzers.
You can directly import xml. parsers. expat. If you do this, you will be able to get some special tips that the SAX interface does not provide. In this way, xml. parsers. expat is somewhat "low-level" compared with SAX ". However, the SAX technology is very standard and stream-oriented;
In most cases, the level of SAX is appropriate. Generally, since
Json.dumps ()
Json.loads ()
Json.dump
Json.load
First, Json.dumps ()Convert a Python dictionary type to a JSON objectImport json# Python dictionary type converted to JSON object data = { ' no ': 1, ' name ':
Python json module and pythonjson Module
Import jsonData = {"No": 1,"Name": "Runoob ","Url": "http://www.runoob.com"}Json_str = json. dumps (data) # The json. dumps () function encodes the data and converts it into json-formatted data.Print ("
First, the conceptserialization (serialization): Converts the state information of an object into a process that can be stored or transmitted over a network, in the form of JSON, XML, and so on. Deserialization is the state of the deserialized object that is read from the storage area (Json,xml) and re-created.JSON (Ja
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