This is json
{"name":"david","age":14,"gender":"male"}
This is python class
class Person:
def __init__(self):
self.name = None
self.age = None
self.gener = None
self.language = None
this is Code
#deserialize func~~~~~
print person.name #prints david
print person.age #prints 14
print person.gender #prints male
print person.language #prints "None"
Can I deserialize Json to class in Python(like C# Newtonsoft)
Thank you.
You can use it with the json.loads() method. You would also need to ensure your JSON was a string and not just declared inline.
Here's an example program:
import json
js = '{"name":"david","age":14,"gender":"male"}'
class Person:
def __init__(self, json_def):
self.__dict__ = json.loads(json_def)
person = Person(js)
print person.name
print person.age
print person.gender
Just a note, though. When you attempt to use print person.language you will have an error, since it doesn't exist on the class.
EDIT
If there is a direct mapping desired, it would require explicit mapping of each possible object.
The following example will give each property a value if it exists in the JSON object and also solves the desire to use any missing properties:
import json
js = '{"name":"david","age":14,"gender":"male"}'
class Person(object):
def __init__(self, json_def):
s = json.loads(json_def)
self.name = None if 'name' not in s else s['name']
self.age = None if 'age' not in s else s['age']
self.gender = None if 'gender' not in s else s['gender']
self.language = None if 'language' not in s else s['language']
person = Person(js)
print person.name
print person.age
print person.gender
print person.language
You can use the **kwargs like approach when we loads a json we will get a dict then we can just initialize our object with **json_def and get our object. for more complex json deserialization you will have to check the dict and take only the values that you need.
example:
class Person:
def __init__(self, name=None, age=None, gender=None, language=None):
self.name = name
self.age = age
self.gender = gender
self.language = language
js = '{"name": "david", "age": 14, "gender": "male"}'
person = Person(**json.loads(js))
print(person.name)
js = '{"name": "david", "age": 14, "gender": "male", "language": "English"}'
person = Person(**json.loads(js))
print(person.language)
{k: v for k, v in self.__dict__ if v}