Complex Python object to JSON Conversion

Question

I need to convert a complex python object to JSON, by complex I mean an object that contains int variables, string variables, and 2 lists of custom objects.

My Python object's constructor is:

 def __init__(self, skills="",vid=""):
    self.Skills = list([])
    for skillID in skills.split("-"):
        if not skillID == "":
            tmpSkill = Skill()
            tmpSkillObj = DBCommands.getSkill(skillID)
            tmpSkill.ID = tmpSkillObj[0][0] #tmpSkillObj[0][0]
            tmpSkill.Name = tmpSkillObj[0][1]
            tmpSkill.isMain = True
            tmpSkill.CurrentlyTesting = False
            tmpSkill.isSub = False
            tmpSkill.Level = 0
            tmpSkill.Tested = False
            tmpSkill.Score = 0
            tmpSkill.Confidence = 0
            tmpSkill.BestScore = 0
            tmpSkill.ParentID = 0
            self.Skills.append(tmpSkill)
            self.AskedQuestions.append(tmpSkill)
    self.Skills = list(self.Skills)
    if not skills  == "":
        self.Skills[0].CurrentlyTesting = True #Start testing the first skill
    if not vid  == "":
        self.VacancyID = int(vid)
    self.PlayerID = 0
    self.Score = float(0)
    self.AskedQuestions = list([])
    self.MaxLevel = 0
    self.AssessmentIsFinished = False

I need a mechanism to encode the object and decode it.

The scenario is: The server should convert the object to String(JSON), then encrypt this string and send it as a Token. When the server receive the token, It should be able to do the opposite work, decrypte the token, parse the string(JSON) to a new object. — Deve
– Deve, Commented Jul 22, 2016 at 19:33
that should work just fine with pickle.dumps(). Your object will be serialized and returned as a string which you can encrypt and transmit using whatever means you like — Aaron
– Aaron, Commented Jul 22, 2016 at 19:37
Especially if you intend to rebuild an identical object from this file you're sending securely, I would recommend pickle for its ease of re-building the object instance. With a .json, you'd have to create a special unpacking script that creates a new instance (basically an alternate __init__ that reads json instead of normal inputs) — Aaron
– Aaron, Commented Jul 22, 2016 at 19:40
@Rawing and Aaron thank you guys, problem solved. I just used the pickle class and then encode it with base64 then decode it and load it into object. — Deve
– Deve, Commented Jul 22, 2016 at 21:07

Deve · Accepted Answer · 2016-07-22 21:09:30Z

1

Encode:

import base64
import pickle
token = base64.b64encode(pickle.dumps(token,-1))

Decode:

import pickle
import base64
Obj = pickle.loads(base64.b64decode(token))

answered Jul 22, 2016 at 21:09

Deve

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