serial-json 1.0.3

Custom json serialization support.

Easily add custom JSON serialization

Code Example

Defaults

import serial_json as json
import datetime

value = b'Hello World!'  # Bytes are not supported by json normally
assert json.loads(json.dumps(value)) == value

dt = datetime.datetime.now()  # datetimes are not supported by json normally
assert json.loads(json.dumps(dt)) == dt

Custom

Custom serialization using a classes __getstate__ and __setstate__ methods.

import serial_json as json

@json.register
class MyClass(object):
    def __init__(self, x=0, y=0):
        self.x = x
        self.y = y

    def __eq__(self, other):
        """Compare objects."""
        try:
            return self.x == other.x and self.y == other.y
        except (AttributeError, Exception):
            return False

    def __getstate__(self):
        return {'x': self.x, 'y': self.y}

    def __setstate__(self, state):
        self.x = state.get('x', 0)
        self.y = state.get('y', 0)

my_value = MyClass()
assert json.loads(json.dumps(my_value)) == my_value

Custom serialization with functions instead of a class with getstate and setstate.

import serial_json

class MyClass(object):
    def __init__(self, x=0, y=0):
        self.x = x
        self.y = y

    def __eq__(self, other):
        """Compare objects."""
        try:
            return self.x == other.x and self.y == other.y
        except (AttributeError, Exception):
            return False

def cls_to_dict(obj):
    return {'x': obj.x, 'y': obj.y}

def cls_from_dict(obj):
    return MyClass(**obj)

# Register the serialize and deserialize functions
serial_json.register(MyClass, cls_to_dict, cls_from_dict)

my_value = MyClass()
assert serial_json.loads(serial_json.dumps(my_value)) == my_value