Python3.8 list of objects to json

Question

i'm having issues on convert list of objects in JSON, i tried with the following:

json.dumps(list)

but i get the following error:

{
  "errorMessage": "Object of type Person is not JSON serializable",
  "errorType": "TypeError",
  "stackTrace": [
    "  File \"/var/task/lambda_function.py\", line 29, in lambda_handler\n    return json.dumps(list)\n",
    "  File \"/var/lang/lib/python3.8/json/__init__.py\", line 231, in dumps\n    return _default_encoder.encode(obj)\n",
    "  File \"/var/lang/lib/python3.8/json/encoder.py\", line 199, in encode\n    chunks = self.iterencode(o, _one_shot=True)\n",
    "  File \"/var/lang/lib/python3.8/json/encoder.py\", line 257, in iterencode\n    return _iterencode(o, 0)\n",
    "  File \"/var/lang/lib/python3.8/json/encoder.py\", line 179, in default\n    raise TypeError(f'Object of type {o.__class__.__name__} '\n"
  ]
}

i have create a list of objects like the following:

list = []
list.append(Person("a","b","c"))
list.append(Person("d","e","f"))

this is my Person class:

class Person:
    def __init__(self, Title, Link,Snippet):
        self.tite = Title
        self.link = Link
        self.link = Snippet

i would like to export my list of objects in JSON, how can i do that?

Thank you in advacne

Maybe this will be enough for you: https://stackoverflow.com/questions/3768895/how-to-make-a-class-json-serializable — Maciek, Apr 29 '20 at 13:26
Hello @Maciek i had a look, it show how to Converter an object to a JSON, not a list of Objects to a single JSON. — the gamer x, Apr 29 '20 at 13:54

score 0 · Answer 1 · answered Apr 29 '20 at 14:24

0

I did it with the following code:

listDict = [x.__dict__ for x in list]
    return json.dumps(listDict)

answered Apr 29 '20 at 14:24

the gamer x

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Python3.8 list of objects to json

1 Answers1