Try to change backend to ‘torch’, but still 'tensorflow'.

[ranck626]

I only download torchs and i do not have tensorflow.
I had thought it was a matter of not successfully modifying the backend. But I found out through the output that the modification was successful. It seems that some functions inside keras-nlp are written using tensorflow. I'm guessing this is the issue and would appreciate your attention and answers.
torch 2.1.0
torchaudio 2.1.0
torchvision 0.16.0
cuda11.8/toolkit/11.8.0
cudnn8.5-cuda11.8/8.5.0.96

/home/name/.keras/keras.json
I try KERAS-HOME and KERAS-BACKEND
{
"floatx": "float32",
"epsilon": 1e-07,
"backend": "torch",
"image_data_format": "channels_last"
}
from keras import backend as K
print(K.backend()) # torch
maybe the key is keras-nlp

Traceback (most recent call last):
File "/home/name/miniconda3/envs/huaxin/lib/python3.10/site-packages/keras_nlp/src/backend/config.py", line 21, in detect_if_tensorflow_uses_keras_3
from tensorflow import keras
ModuleNotFoundError: No module named 'tensorflow'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/name/codes/gemma_demo.py", line 11, in
import keras_nlp
File "/home/name/miniconda3/envs/huaxin/lib/python3.10/site-packages/keras_nlp/init.py", line 8, in
from keras_nlp import layers
File "/home/name/miniconda3/envs/huaxin/lib/python3.10/site-packages/keras_nlp/layers/init.py", line 8, in
from keras_nlp.src.layers.modeling.alibi_bias import AlibiBias
File "/home/name/miniconda3/envs/huaxin/lib/python3.10/site-packages/keras_nlp/src/init.py", line 23, in
from keras_nlp.src import layers
File "/home/xuzichao/miniconda3/envs/huaxin/lib/python3.10/site-packages/keras_nlp/src/layers/init.py", line 15, in
from keras_nlp.src.layers.modeling.cached_multi_head_attention import (
File "/home/name/miniconda3/envs/huaxin/lib/python3.10/site-packages/keras_nlp/src/layers/modeling/cached_multi_head_attention.py", line 15, in
from keras_nlp.src.api_export import keras_nlp_export
File "/home/name/miniconda3/envs/huaxin/lib/python3.10/site-packages/keras_nlp/src/api_export.py", line 17, in
from keras_nlp.src.backend import keras
File "/home/name/miniconda3/envs/huaxin/lib/python3.10/site-packages/keras_nlp/src/backend/init.py", line 29, in
from keras_nlp.src.backend import config
File "/home/name/miniconda3/envs/huaxin/lib/python3.10/site-packages/keras_nlp/src/backend/config.py", line 38, in
_USE_KERAS_3 = detect_if_tensorflow_uses_keras_3()
File "/home/name/miniconda3/envs/huaxin/lib/python3.10/site-packages/keras_nlp/src/backend/config.py", line 27, in detect_if_tensorflow_uses_keras_3
raise ValueError(
ValueError: Unable to import keras with tensorflow. Please check your Keras and Tensorflow version are compatible; Keras 3 requires TensorFlow 2.15 or later. See keras.io/getting_started for more information on installing Keras.

[sampathweb]

@ranck626 - Please open the issue in keras_nlp repo - https://github.com/keras-team/keras-nlp

Also, keras_nlp uses TensorFlow for preprocessing of text, so its a requirement for preprocessing even if your backend for model is torch.

Closing this issue now. Please open in keras_nlp if its still a issue.