Introduction to the Dumps,loads,dump,load method for Python JSON modules

#--*--conding:utf-8--*--#jshon这个模块就是做序列化处理的, the main use of the JSON module four ways, Dumps#2, loads#3, Dump#4, load# first introduced dumps method, The dumps module of Jshon can be used to serialize specific objects into string # import json# l1 = [1,2,3,454]# d1 = {' K1 ': ' v1 '}# ret = json.dumps (L1) # print (ret) # ret = json.dumps (d1) # print (ret) # <class ' str ' ># <class ' str ' ># l1 = ' [1,2,3,4] ' # d1 = ' {' K1 ': ' v1 '} ' # Print (Type (L1)) # Print (Type (D1)) # #在来介绍loads方法 # The above L1 and D1 are strings, but they look like the list and the dict, and we can convert the 2 strings to list and dict by deserialization, Here if the shape is not list or dict, then the successful # ret = Json.loads (L1) # Print (Ret,type (ret)) # ret = json.loads (d1) # Print (Ret,type (ret)) is not converted # [1, 2, 3, 4] <class ' list ' ># {' K1 ': ' v1 '} <class ' Dict ' > #来做一个小练习, via third-party module get to HTTP request, The JSON module then converts the data of the returned string structure into the form of a dictionary, so that we can do the operation on this dictionary # import requests# import json# ret = requests.get (' http:// Wthrcdn.etouch.cn/weather_mini?city= Beijing ') # ret.encoding = ' Utf-8 ' # S1 = ret.text# print (S1,type (S1)) #拿到字符串形式的数据 # {"desc ":" Invilad-citykey "," Status ": 1002} <class ' str ' ># d1 = json.loads (S1) # Print (D1,type (D1)) #通过loads的方法, put the wordstring into dictionary # {' desc ': ' Invilad-citykey ', ' Status ': 1002} <class ' Dict ' > #上面的dumps和loads方法都在内存中转换, The following dump and load methods will be one more step, dump is to write the serialized string into a file, and load is to read the file from a file # and then to introduce the Dump method # import json# d1 = {' name ': ' Foot '}# This step will write the D1 serialized string into the db file # Json.dump (D1,open (' db ', ' W ')) # D1 = json.load (open (' db ', ' R ')) # print (D1,type (D1)) # {' Name ': ' Foot '} <class ' Dict ' >

Pickle.dump (info,f) #f. Write (Pickle.dumps (info)) (The difference)

Introduction to the Dumps,loads,dump,load method for Python JSON modules