===========
json_dunder
===========
Encdoe objects with a __json__ dunder method and decode objects with a __from_json__ dunder method.
.. code-block:: python
import json_dunder
# Use tells json to use this class
coder = json_dunder.JsonDunderTypeCoder().use()
@coder.register
class A:
def __init__(self, x):
self.x = x
def __eq__(self, other):
if isinstance(other, self.__class__):
return self.x == other.x
return False
def __json__(self):
return {"x": self.x}
@classmethod
def __from_json__(cls, d: dict):
return cls(**d)
@coder.register
class B:
def __init__(self, a, y):
self.a = a
self.y = y
def __eq__(self, other):
if isinstance(other, self.__class__):
return self.a == other.a and self.y == other.y
return False
def __json__(self):
return {"a": self.a, "y": self.y}
@classmethod
def __from_json__(cls, d: dict):
return cls(**d)
a = A(1)
b = B(a, 2)
sa = json_dunder.dumps(a)
assert sa == '{"x": 1, "__json_type__": "__main__.A"}'
sb = json_dunder.dumps(b)
assert sb == '{"a": {"x": 1, "__json_type__": "__main__.A"}, "y": 2, "__json_type__": "__main__.B"}'
obj = json_dunder.loads(sa)
assert obj == a
obj = json_dunder.loads(sb)
assert obj.a == a
assert obj == b
Install
=======
.. code-block::
pip install json_dunder
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JSON
