48 lines
1.7 KiB
Python
48 lines
1.7 KiB
Python
"""
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Poor Man's Configurator. Probably a terrible idea. Example usage:
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$ python train.py config/override_file.py --batch_size=32
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this will first run config/override_file.py, then override batch_size to 32
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The code in this file will be run as follows from e.g. train.py:
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>>> exec(open('configurator.py').read())
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So it's not a Python module, it's just shuttling this code away from train.py
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The code in this script then overrides the globals()
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I know people are not going to love this, I just really dislike configuration
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complexity and having to prepend config. to every single variable. If someone
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comes up with a better simple Python solution I am all ears.
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"""
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import sys
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from ast import literal_eval
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for arg in sys.argv[1:]:
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if '=' not in arg:
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# assume it's the name of a config file
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assert not arg.startswith('--')
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config_file = arg
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print(f"Overriding config with {config_file}:")
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with open(config_file) as f:
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print(f.read())
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exec(open(config_file).read())
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else:
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# assume it's a --key=value argument
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assert arg.startswith('--')
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key, val = arg.split('=')
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key = key[2:]
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if key in globals():
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try:
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# attempt to eval it it (e.g. if bool, number, or etc)
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attempt = literal_eval(val)
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except (SyntaxError, ValueError):
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# if that goes wrong, just use the string
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attempt = val
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# ensure the types match ok
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assert type(attempt) == type(globals()[key])
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# cross fingers
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print(f"Overriding: {key} = {attempt}")
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globals()[key] = attempt
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else:
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raise ValueError(f"Unknown config key: {key}")
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