Python JSON
In this chapter we will introduce how to use Python language to encode and decode JSON objects.
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 it:
$ tar xvfz demjson-1.6.tar.gz $ cd demjson-1.6 $ python setup.py install
JSON Function
| Function | Description |
|---|---|
| encode | Encode Python objects into JSON strings |
| decode | Decode encoded JSON strings into Python objects |
encode
The Python encode() function is used to encode Python objects into JSON strings.
Syntax
demjson.encode(self, obj, nest_level=0)
Example
The following example encodes the array into JSON format data:
#!/usr/bin/python
import demjson
data = [ { 'a' : 1, 'b' : 2, 'c' : 3, 'd' : 4, 'e' : 5 } ]
json = demjson.encode(data)
print jsonThe execution result of the above code 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)
Examples
The following examples show how Python decodes JSON objects:
#!/usr/bin/python
import demjson
json = '{"a":1,"b":2,"c":3,"d":4,"e":5}';
text = demjson.decode(json)
print textThe execution result of the above code is:
{u'a': 1, u'c': 3, u'b': 2, u'e': 5, u'd': 4}
