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Check off a todo in utils: add 'freeze()' to freeze config. #121

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Check off a todo in utils: add 'freeze()' to freeze config. #121

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7 changes: 6 additions & 1 deletion mingpt/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
import json
import random
from ast import literal_eval
from collections import namedtuple

import numpy as np
import torch
Expand Down Expand Up @@ -31,7 +32,6 @@ def setup_logging(config):
class CfgNode:
""" a lightweight configuration class inspired by yacs """
# TODO: convert to subclass from a dict like in yacs?
# TODO: implement freezing to prevent shooting of own foot
# TODO: additional existence/override checks when reading/writing params?

def __init__(self, **kwargs):
Expand All @@ -52,6 +52,11 @@ def _str_helper(self, indent):
parts = [' ' * (indent * 4) + p for p in parts]
return "".join(parts)

def freeze(self):
asdict = self.to_dict()
frozen_cfg_builder = namedtuple('CfgNode', [k for k in asdict.keys()])
return frozen_cfg_builder(**asdict)

def to_dict(self):
""" return a dict representation of the config """
return { k: v.to_dict() if isinstance(v, CfgNode) else v for k, v in self.__dict__.items() }
Expand Down