Python对象与json数据的转换问题实例详解_python_

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)

#!/usr/bin/python import json data = [ { 'a' : 1, 'b' : 2, 'c' : 3, 'd' : 4, 'e' : 5 } ] data2 = json.dumps(data) print(data2)

#!/usr/bin/python import json data = [ { 'a' : 1, 'b' : 2, 'c' : 3, 'd' : 4, 'e' : 5 } ] data2 = json.dumps({'a': 'Runoob', 'b': 7}, sort_keys=True, indent=4, separators=(',', ': ')) print(data2)

json.loads(s[, encoding[, cls[, object_hook[, parse_float[, parse_int[, parse_constant[, object_pairs_hook[, **kw]]]]]]]])

#!/usr/bin/python import json jsonData = '{"a":1,"b":2,"c":3,"d":4,"e":5}'; text = json.loads(jsonData) print(text)

$ tar -xvzf demjson-2.2.3.tar.gz $ cd demjson-2.2.3 $ python setup.py install

demjson.encode(self, obj, nest_level=0)

#!/usr/bin/python import demjson data = [ { 'a' : 1, 'b' : 2, 'c' : 3, 'd' : 4, 'e' : 5 } ] json = demjson.encode(data) print(json)

demjson.decode(self, txt) 

#!/usr/bin/python import demjson json = '{"a":1,"b":2,"c":3,"d":4,"e":5}'; text = demjson.decode(json) print(text)

import json #json_data = [{"苹果":"appale","香蕉":"banana"}, # {"猫":"cat","狗":"dog"}, # {"红色":"red","蓝色":"blue"},] #python数据类型： list json_data = [{"a":"appale","b":"banana"}, {"c":"cat","d":"dog"}, {"r":"red","b":"blue"},] print(json_data) #[{'a': 'appale', 'b': 'banana'}, {'c': 'cat', 'd': 'dog'}, {'r': 'red', 'b': 'blue'}] print(type(json_data))# json_data2 = json.dumps(json_data)#json.dumps 用于将 Python 对象编码成 JSON 字符串。 print(json_data2) #[{"a": "appale", "b": "banana"}, {"c": "cat", "d": "dog"}, {"r": "red", "b": "blue"}] print(type(json_data2))# site = { "sites": [ { "name":"" , "url":"www.jb51.net" }, { "name":"google" , "url":"www.google.com" }, { "name":"微博" , "url":"www.weibo.com" } ] } #print(sites) #NameError: name 'sites' is not defined print(site['sites'])