Python tutorial python JSON

Python JSON

In this section we will show you how to encode and decode JSON objects using the Python language.

Environment configuration

Before using Python to encode or decode JSON data, we need to install the JSON module first. 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

Describe

Encode to encode a Python object as a JSON string

Decode decoding encoded JSON strings to Python objects

Encode

The Python encode () function encodes a Python object into a JSON string.

Grammar

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

Instance

The following example encodes an array into JSON-formatted data:

#!/usr/bin/pythonimport Demjsondata = [{' A ': 1, ' B ': 2, ' C ': 3, ' d ': 4, ' E ': 5}]json = Demjson.encode (data) print Json

The result of the above code execution is:

[{"A": 1, "B": 2, "C": 3, "D": 4, "E": 5}]

Decode

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

Grammar

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 result of the above code execution is:

{u ' a ': 1, U ' C ': 3, U ' B ': 2, U ' E ': 5, U ' d ': 4}

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