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make lpips optional
Summary: So that lpips isn't needed in readthedocs Reviewed By: shapovalov Differential Revision: D40859351 fbshipit-source-id: 58933bd3b71e78e658fbce56c3663b11ee2331f6
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@ -5,13 +5,12 @@
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# LICENSE file in the root directory of this source tree.
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import copy
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import json
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import logging
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import os
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import warnings
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from typing import Any, Dict, List, Optional, Tuple
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import lpips
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import torch
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import tqdm
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@ -89,8 +88,16 @@ class ImplicitronEvaluator(EvaluatorBase):
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Returns:
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A dictionary of results.
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"""
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lpips_model = lpips.LPIPS(net="vgg")
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lpips_model = lpips_model.to(device)
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try:
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import lpips
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lpips_model = lpips.LPIPS(net="vgg")
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lpips_model = lpips_model.to(device)
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except ImportError:
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warnings.warn(
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"lpips library NOT FOUND. lpips losses will not be calculated"
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)
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lpips_model = None
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model.eval()
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