[Python Tutorial] PythonJSON

This section describes how to use Python to encode and decode JSON objects.

Python JSON

This section describes how to use Python to encode and decode JSON objects.

Environment configuration

Before using Python to encode or decode JSON data, we need to install the JSON module. In this tutorial, we will download Demjson and install:

$tar xvfz demjson-1.6.tar.gz$cd demjson-1.6$python setup.py install

JSON Functions

Function

Description

Encode encodes a Python object into a JSON string

Decode decodes the encoded JSON string into a Python object

Encode

The Python encode () function is used to encode a Python object into a JSON string.

Syntax

demjson.encode(self, obj, nest_level=0)

Instance

The following example encodes arrays into JSON data:

#!/usr/bin/pythonimport demjsondata = [ { 'a' : 1, 'b' : 2, 'c' : 3, 'd' : 4, 'e' : 5 } ]json = demjson.encode(data)print json

The code execution result is:

[{"a":1,"b":2,"c":3,"d":4,"e":5}]

Decode

Python can use the demjson. decode () function to decode JSON data. This function returns the data type of the Python field.

Syntax

demjson.decode(self, txt)

Instance

The following example shows how Python decodes a JSON object:

#!/usr/bin/pythonimport demjsonjson = '{"a":1,"b":2,"c":3,"d":4,"e":5}';text = demjson.decode(json)print  text

The code execution result is:

{u'a': 1, u'c': 3, u'b': 2, u'e': 5, u'd': 4}

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