🔒 If a `Callable` is set as an attribute of a class it is being treated as a method.

[ornate jasper]

I'm working to extend some functionality of the SSG I maintain to be able to render arbitrary serializable objects as JSON, TOML, or other standardized formats.

class DataObject(BaseObject):
    """Class to store a data object"""
    data_object: Any = None  # The data object
    output_file: str | Path = Path('data_object.json')
    serializer: Callable = json.dumps
    serializer_args: dict | None = None

    def render(self, *args, **kwargs):
        """
        Renders the data_object to the file at output_file
        """
        path = Path(site.output_path) / Path(self.output_file)
        path.parent.mkdir(parents=True, exist_ok=True)

        serialized = self.serializer(self.data_object)

        path.write_text(serialized)

For some reason, self.serializer is being treated like a method of the class and I am getting:

  File "/Users/brass75/src/render-engine/src/render_engine/data_object.py", line 41, in render
    serialized = self.serializer(data_object)
TypeError: dumps() takes 1 positional argument but 2 were given

Does anyone know what I need to do to maintain this Callable attribute as a function, and not as a method of DataObject?

[tough ermine]

@ornate jasper

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[dense cape]

Two things you might be able to do,
mark it as a staticmethod

serializer = staticmethod(json.dumps)

or assign it to the object during __init__

def __init__(self, ...):
    self.serializer = json.dumps

[ornate jasper]

Thank you.

Now I just need to get this into a format where I can actually use it for the app but I have where to start.

!close

[tough ermine]

Python help channel closed with !close

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