json与python

Python 对象编码成 JSON 字符串

json.dumps 用于将 Python 对象编码成 JSON 字符串

json.dumps(obj, *, skipkeys=False, ensure_ascii=True, check_circular=True,allow_nan=True, cls=None, indent=None,separators=None,default=None, sort_keys=False, **kw)

import json
dict1 = {"name":"张三","age":10}
print(json.dumps(dict1)) #转json {"name": "\u5f20\u4e09", "age": 10}

str1 = '{"name":"张三","age":10}'
json1 = json.loads(str1)
print(json1) #{'name': '张三', 'age': 10}

print(json.dumps(dict1, sort_keys=True, indent=4))
'''
{
    "age": 10,
    "name": "\u5f20\u4e09"
}
'''

python 原始类型向 json 类型的转化对照表：

Python	JSON
dict	object
list, tuple	array
str, unicode	string
int, long, float	number
True	true
False	false
None	null

解码 JSON 数据

json.loads(s, *, cls=None, object_hook=None, parse_float=None,parse_int=None, parse_constant=None, object_pairs_hook=None, **kw)

import json
str1 = '{"name":"张三","age":10}'
json1 = json.loads(str1)
print(json1) #{'name': '张三', 'age': 10}

json 类型转换到 python 的类型对照表：

JSON	Python
object	dict
array	list
string	unicode
number (int)	int, long
number (real)	float
true	True
false	False
null	None