Parse all bytearray values in a JSON in Python

I have a complex object that has some properties of bytearray type and when I try to convert it to JSON it throws this error:

bytearray

TypeError: Object of type bytearray is not JSON serializable.

I can make a method hardcoding the properties that I know that are bytearray type and then do this:

bytearray

bytes(key.key_value).decode("utf-8")

The problem is that I have lots of possible cases and I'd like to make a generic method that allows me to parse all bytearray properties of a JSON to string.
I tried to make my own json.JSONEncoder implementation but it didn't work. Any suggestion? Thanks in advance!

bytearray

string

json.JSONEncoder

1 Answer
1

Decide on the encoding and error handling behaviour that you want to use for decoding bytearrays to strings, and then:

import json

class FunkyJSONEncoder(json.JSONEncoder):
def default(self, obj):
if isinstance(obj, bytearray):
return obj.decode("utf-8", errors="replace")
else:
return super().default(obj)


Usage example:

>>> dumps = FunkyJSONEncoder().encode
>>> dumps('k': bytearray(b'potato'))
'"k": "potato"'


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