[pynest] Better algoritm for serialize data

[babsey]

The algoritm of the serialize_data here is not clean:

nest-simulator/pynest/nest/lib/hl_api_types.py

Lines 1274 to 1301 in 7153817

	def serialize_data(data):
	"""Serialize data for JSON.
	Parameters
	----------
	data : any
	Returns
	-------
	data_serialized : str, int, float, list, dict
	Data can be encoded to JSON
	"""
	if isinstance(data, (numpy.ndarray, NodeCollection)):
	return data.tolist()
	if isinstance(data, (numpy.integer)):
	return int(data)
	elif isinstance(data, SynapseCollection):
	# Get full information from SynapseCollection
	return serialize_data(data.get())
	elif isinstance(data, kernel.SLILiteral):
	# Get name of SLILiteral.
	return data.name
	elif isinstance(data, (list, tuple)):
	return [serialize_data(d) for d in data]
	elif isinstance(data, dict):
	return dict([(key, serialize_data(value)) for key, value in data.items()])
	return data

According to some suggestions online:

• Convert multiple isinstance checks to structural pattern matching
• PEP 634 – Structural Pattern Matching: Specification

I would suggest to change the algorithm of this function to

def serialize_data(data):
    ...

    match data:
        case numpy.integer():
            return int(data)
        case numpy.floating():
            return float(data)
        case numpy.bool_():
            return bool(data)
        case numpy.ndarray() | NodeCollection():
            return serialize_data(data.tolist())
        case SynapseCollection():
            return serialize_data(data.get())
        case list() | tuple():
            return [serialize_data(d) for d in data]
        case dict():
            return {
                serialize_data(key): serialize_data(value)
                for key, value in data.items()
            }
    return data

Let's hear your thoughts on this idea.