Can't load saved model (UnicodeDecodeError)

[g811201]

I tried to use scikeras KerasRegressor to wrap my model.

`
import warnings
from tensorflow import get_logger
get_logger().setLevel('ERROR')
warnings.filterwarnings("ignore", message="Setting the random state for TF")
import numpy as np
from scikeras.wrappers import KerasRegressor
from tensorflow import keras
from sklearn.datasets import make_regression

X_regr, y_regr = make_regression(1000, 20, n_informative=10, random_state=0)

X_regr.shape, y_regr.shape, y_regr.min(), y_regr.max()
def get_reg(meta, hidden_layer_sizes, dropout):
n_features_in_ = meta["n_features_in_"]
model = keras.models.Sequential()
model.add(keras.layers.Input(shape=(n_features_in_,)))
for hidden_layer_size in hidden_layer_sizes:
model.add(keras.layers.Dense(hidden_layer_size, activation="relu"))
model.add(keras.layers.Dropout(dropout))
model.add(keras.layers.Dense(1))
return model
from scikeras.wrappers import KerasRegressor

reg = KerasRegressor(
model=get_reg,
loss="mse",
metrics=[KerasRegressor.r_squared],
hidden_layer_sizes=(100,),
dropout=0.5,
)
reg.fit(X_regr, y_regr);

y_pred = reg.predict(X_regr[:5])
y_pred

import pickle
bytes_model = pickle.dumps(reg)
new_reg = pickle.loads(bytes_model)
new_reg.predict(X_regr[:5]) # model is still trained
`

(same as the example: https://adriangb.com/scikeras/stable/notebooks/Basic_Usage.html)

I can train and save the model, but I can't load it. (with pickle)

I got:

`
Traceback (most recent call last):

File D:\miniforge\envs\develop\Lib\site-packages\spyder_kernels\py3compat.py:356 in compat_exec
exec(code, globals, locals)

File d:\untitled3.py:52
new_reg = pickle.loads(bytes_model)

File D:\miniforge\envs\develop\Lib\site-packages\scikeras_saving_utils.py:50 in unpack_keras_model
model.load_weights(temp_dir)

File D:\miniforge\envs\develop\Lib\site-packages\keras\src\utils\traceback_utils.py:70 in error_handler
raise e.with_traceback(filtered_tb) from None

File D:\miniforge\envs\develop\Lib\site-packages\tensorflow\python\training\py_checkpoint_reader.py:95 in NewCheckpointReader
except RuntimeError as e:

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa6 in position 181: invalid start byte
`

env:
OS: windows10 22H2
python==3.11.6
tensorflow==2.14.0
scikit-learn==1.13.1
scikeras==0.12.0

p.s.
I can't load the model in windows.
However, I can load the model successfully in linux.

[adriangb]

I'm guessing this is fixed now. Please let me know if this is still not fixed with SciKeras 0.13.0. Thanks!