Python objects and JSON convert each other

First, Python support for JSON

Starting with python2.6, JSON support has been added to the Python standard library, and it is only necessary to manipulate the JSON import json .

Second, the Python object is converted into a JSON string

When you convert a Python object to a JSON string, you only need the following knowledge:

Conversion rules for 1.python objects to JSON strings:

Python	JSON
Dict	Object
List, tuple	Array
STR, Unicode	String
int, long, float	Number
True	True
False	False
None	Null

2. Use the following functions mainly:

json.dumps()

The specific parameters of the function (see the link in the appendix for specific usage):
Json.dumps (obj, Skipkeys=false, Ensure_ascii=true, Check_circular=true, Allow_nan=true, Cls=none, Indent=None, Separators=none, encoding= "Utf-8", Default=none, Sort_keys=false, **kw)

Example

Test code:

#构造字典python2json = {}#构造listlistData = [1,2,3]python2json["listData"] = listDatapython2json["strData"] = "test python obj 2 json"#转换成json字符串json_str = json.dumps(python2json)print json_str

Conversion Result:

{    "listData": [        1,        2,        3 ], "strData": "test python obj 2 json"}

C. JSON string converted to Python object

In the same vein, converting a JSON string into a Python object requires only the following knowledge:

1.json string to Python object conversion rules:

JSON	Python
Object	Dict
Array	List
String	Unicode
Number (int)	int, long
Number (real)	Float
True True
False	False
Null	None

2. Use the following functions mainly:

json.loads()

The specific parameters of the function (see the link in the appendix for specific usage):
Json.loads (s[, encoding[, cls[, object_hook[, parse_float[, parse_int[, parse_constant[, object_pairs_hook[, **kw]] [] ]]])

Example

Test code:

str = ‘{"listData": [1, 2, 3], "strData": "test python obj 2 json"}‘json2python = json.loads(str)print type(json2python)

Conversion Result:

<type ‘dict‘>

Python objects and JSON convert each other