python 对象转换为json_Python Python对象转换成JSON

1、从Python对象转换成JSON

如果有Python对象，则可以使用json.dumps()方法将其转换为JSON字符串。

例如：

从Python对象转换为JSON：import json

# a Python object (dict):

x = '{ "name":"cjavapy", "age":3, "city":"china"}'

# convert into JSON:

y = json.dumps(x)

#结果是 JSON string:

print(y)

下列类型可以转换Python对象成JSON字符串:dict

list

tuple

string

int

float

True

False

None

例如：

将Python对象转换为JSON字符串，并输出值：import json

print(json.dumps({"name": "cjavapy", "age": 3}))

print(json.dumps(["python", "cjavapy"]))

print(json.dumps(("python", "cjavapy")))

print(json.dumps("hello"))

print(json.dumps(42))

print(json.dumps(31.76))

print(json.dumps(True))

print(json.dumps(False))

print(json.dumps(None))

从Python对象转换为JSON时，Python对象将转换为等效的JSON(JavaScript)：PythonJSON

dictObject

listArray

tupleArray

strString

intNumber

floatNumber

Truetrue

Falsefalse

Nonenull

例如：

转换包含所有合法数据类型的Python对象：import json

x = {

"name": "python",

"age": 20,

"married": True,

"divorced": False,

"children": ("c","python"),

"pets": None,

"langs": [

{"model": "java", "year": 5},

{"model": "python", "year": 6}

]

}

print(json.dumps(x))