Extend the Python language with new syntax.

Example file

# codec: lab
from pydantic import BaseModel

class MyExperiment(BaseModel):
		'''Training a neural network to do a thing.'''
		
		# identifier after @ indicates a YAML file
		network: Network@spk-vih[
				# modifications to the YAML contents
				shape[1]  = 500
				layers[1].populations.e.kind = adaptive-LIF
		]
		loss: Loss@mse
		optimizer: Optimizer@adam
		dataset: Dataset@default
		
		
		
		
		
		
		
		
		
		
		
		

→

# codec: lab
from pydantic import BaseModel

class MyExperiment(BaseModel):
		'''Training a neural network to do a thing.'''
		
		network: Network
		loss: Loss
		optimizer: Optimizer
		dataset: Dataset
		
		@classmethod
		def __load(cls) -> Self:
				network = yaml.load_safe("spk-vih.yaml")
				network.shape[1] = 500
				network.layers[1].populations.e.kind = "adaptive-LIF"
				
				loss = yaml.load_safe("mse.yaml")
				optimizer = yaml.load_safe("adam.yaml")
				dataset = yaml.load_safe("default.yaml")
				
				return cls.model_validate(
					network=network,
					loss=loss,
					optimizer=optimizer,
					dataset=dataset
				)