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Fix unreachable warning (#1939)

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* Fix unreachable warning

* Update error message
This commit is contained in:
Chunyang Wen 2025-03-08 09:23:04 +08:00 committed by GitHub
parent c4230747a1
commit d699cc1330
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1 changed files with 4 additions and 3 deletions
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7
python/mlx/nn/losses.py
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@ -1,7 +1,7 @@
# Copyright © 2023 Apple Inc.
import math
from typing import Literal, Optional
from typing import Literal, Optional, get_args
import mlx.core as mx
@ -9,14 +9,15 @@ Reduction = Literal["none", "mean", "sum"]
def _reduce(loss: mx.array, reduction: Reduction = "none"):
if reduction not in get_args(Reduction):
raise ValueError(f"Invalid reduction. Must be one of {get_args(Reduction)}.")
if reduction == "mean":
return mx.mean(loss)
elif reduction == "sum":
return mx.sum(loss)
elif reduction == "none":
return loss
else:
raise ValueError("Invalid reduction. Must be 'none', 'mean', or 'sum'.")
def cross_entropy(