Python serialized JSON, Pickle

What is JSON:

JSON (JavaScript Object Notation) is a lightweight data interchange format. Easy to read and write, but also easy to machine parse and generate. JSON takes a completely language-independent text format, but also uses a C-like family habit such as C,c++,c#,java,javascript,perl,python, which makes JSON an ideal exchange language.

For encoding and decoding of simple data types:

## #encoding>>>ImportJSON>>> obj=[[1,2,3], ('a','b','C'),{'4'75A'6': 7},'def']>>> encoding_json=json.dumps (obj)>>>Print(Encoding_json) [[1, 2, 3], ["a","b","C"], {"4": 5,"6": 7},"def"]#Note that this tuple is converted to a list>>>Print(repr (obj)) [[1, 2, 3], ('a','b','C'), {'4': 5,'6': 7},'def']#this is just converted to a string

>>> Json.dumps ({' B ': 4, ' A ': 5, ' E ': 6})
' {' A ': 5, ' B ': 4, ' E ': 6} '
>>> Json.dumps ({' B ': 4, ' A ': 5, ' e ': 6},sort_keys=true)
' {' A ': 5, ' B ': 4, ' E ': 6} '
>>> A = Json.dumps ({' B ': 4, ' A ': 5, ' e ': 6},sort_keys=true,indent=5) #indent指明缩进为5
>>> Print (a)
{
"A": 5,
"B": 4,
"E": 6
}

There is a conversion from the Python data type to the JSON type during the encoding of the JSON.

Python	Json
Dict	Object
List,tuple	Array
Str	String
Int,float	Number
True	True
False	False
None	Null

## decode>>>Encoding_json'[ [1, 2, 3], ["A", "B", "C"], {"4": 5, "6": 7}, "Def"]'>>> decoding_json=json.loads (Encoding_json)>>>Print(Decoding_json) [[1, 2, 3], ['a','b','C'], {'4': 5,'6': 7},'def']>>>type (Decoding_json)<class 'List'>>>>Print(decoding_json[2]['4'])5

The data type conversions from JSON to Python are as follows:

Json	Python
Object	Dict
Array	List
String	Unicode
Number	Int,long
Ture	True
False	False
Null	None

Python serialized JSON, Pickle