Package for registering types and creating systems based on config files
Python Type Registry
type-registry library provides the ability to easily register factory methods (or classes) that can be
used in a configuration file to quickly construct complex objects (or models).
Lets demonstrate how to easily use this library. There are a functions and decorators, but the most important is the
decorator. By registering a type, we are telling the system that when a configuration section has a special key
to construct that section into an object.
We start by registering our
PytorchExample and give it a more usable name of
import torch.nn as nn from type_registry import register @register('pytorch-model', input_size=1024, output_size=8) def PytorchExample(nn.Module): def __init__(self, input_size, hidden_size, output_size): ...
Now that we have the type registered with the system, in the configuration we can supplied the details
around its construction (in this case we are just providing the value of the
model: __factory__: pytorch-model hidden_size: ...
Constructing from config
Once we have our types registered and a config defined, we need to correctly load the configuration so that
it will construct the types. This is accomplished using the
from type_registery import load_yaml_str yaml_str = get_config() result = load_yaml_str(yaml_str)
You can also have environment variables (or custom variables) automatically expanded in the same configuration file.
model: __factory__: simple-model use_aws: $USE_AWS
Viewing the Registery
To make working with the library a little easier, there is a function that can be called which will print out the details of the registery (at the time the call takes place).
from type_registery import print_registry if __name__ == '__main__': print_registery(color=True)
color value to True will have the system print out the results using shell coloring (termcolor library).
You can also have the output of the
print_registry call target a file instead of
from type_registery import print_registry if __name__ == '__main__': with open('registry.txt', 'w') as f: print_registry(file=f)
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