如何将Python字典转换成Json

from distutils.log import warn as printf #应对python2和3的print的差异
from json import dumps 
from pprint import pprint #pprint.pprint()用来美观地输出Python对象
 
BOOKs = {
    '001': {
        'title': 'name1',
        'edition': 2,
        'year': 2007,
    },
    '002': {
        'title': 'name2',
        'authors': '无缘浪子党',
    },

}
printf ('*** RAW DICT*** ')
printf (BOOKs)

printf('\n *** PRETTY_PRINTED DICT ***')
pprint(BOOKs)

printf('\n***RAW JSON***')
printf(dumps(BOOKs))

printf('\n *** PRETTY_PRINTED JSON ***')
printf(dumps(BOOKs, indent=4))     #将json格式化输出

此处基于Python3.72可以运行，

*** RAW DICT*** 
{'001': {'title': 'name1', 'edition': 2, 'year': 2007}, '002': {'title': 'name2', 'authors': '无缘浪子党'}}

 *** PRETTY_PRINTED DICT ***

***RAW JSON***
{"001": {"title": "name1", "edition": 2, "year": 2007}, "002": {"title": "name2", "authors": "\u65e0\u7f18\u6d6a\u5b50\u515a"}}

 *** PRETTY_PRINTED JSON ***
{
    "001": {
        "title": "name1",
        "edition": 2,
        "year": 2007
    },
    "002": {
        "title": "name2",
        "authors": "\u65e0\u7f18\u6d6a\u5b50\u515a"
    }
}
{'001': {'edition': 2, 'title': 'name1', 'year': 2007},
 '002': {'authors': '无缘浪子党', 'title': 'name2'}}

Process finished with exit code 0

ps：此处是字典转换为JSON，也可以将数据从列表或者元组转成JSON。