allow custom class json behavior on builtin json object
Project description
What is this?
A patch to the built-in python json
object that allows classes to specify how they should be serialized.
Why?
Because sometimes external code uses something like
import json
json.dumps(list_containing_your_object)
And it simply throws an error no matter how you customize your object
How do I use this?
pip install json-fix
from json_fix import fix_it; fix_it() # only needs to be done once per runtime, NOT per-file
# same file, or different file
class YOUR_CLASS:
def __json__(self):
# YOUR CUSTOM CODE HERE
# you probably just want to do:
# return self.__dict__
return "a built-in object that is natually json-able"
If you want control over classes that are defined externally (datetime, numpy.array, tensor, etc), use the override_table
from json_fix import fix_it; fix_it() # only needs to be done once per runtime, NOT per-file
import json
import pandas as pd
SomeClassYouDidntDefine = pd.DataFrame
# create a boolean function for identifying the class
class_checker = lambda obj: isinstance(obj, SomeClassYouDidntDefine)
# then assign it to a function that does the converting
json.override_table[class_checker] = lambda obj_of_that_class: json.loads(obj_of_that_class.to_json())
json.dumps([ 1, 2, SomeClassYouDidntDefine() ], indent=2)
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