具体报错情况：
AttributeError Traceback (most recent call last)
<ipython-input-29-7b65833fd81b> in <module>
8 from keras.utils.data_utils import get_file
9 from tensorflow.keras.preprocessing.sequence import pad_sequences
---> 10 from shakespeare_utils import *
11 # import sys
12 # import io
D:\jupyter\5.1\shakespeare_utils.py in <module>
131 x, y = vectorization(X, Y, n_x = len(chars), char_indices = char_indices)
132 print("Loading model...")
--> 133 model = load_model('models/model_shakespeare_kiank_350_epoch.h5')
134
135
D:\Anaconda3\lib\site-packages\keras\engine\saving.py in load_wrapper(*args, **kwargs)
456 os.remove(tmp_filepath)
457 return res
--> 458 return load_function(*args, **kwargs)
459
460 return load_wrapper
D:\Anaconda3\lib\site-packages\keras\engine\saving.py in load_model(filepath, custom_objects, compile)
548 if H5Dict.is_supported_type(filepath):
549 with H5Dict(filepath, mode='r') as h5dict:
--> 550 model = _deserialize_model(h5dict, custom_objects, compile)
551 elif hasattr(filepath, 'write') and callable(filepath.write):
552 def load_function(h5file):
D:\Anaconda3\lib\site-packages\keras\engine\saving.py in _deserialize_model(h5dict, custom_objects, compile)
245
246 if 'keras_version' in model_weights_group:
--> 247 original_keras_version = model_weights_group['keras_version'].decode('utf8')
248 else:
249 original_keras_version = '1'
AttributeError: 'str' object has no attribute 'decode'
keras与h5py版本不兼容。
查看h5py的版本，未安装，自动安装后
pip install h5py==2.10.0
在2.10版本中，字符串的存储是经过编码的，而在3.0.0的版本中，则不会检查是否经过编码。所以才会出现最初的AttributeError: ‘str’ object has no attribute ‘decode’。
发现h5dict与h5py不兼容
卸载h5dict
pip uninstall h5dict
安装
pip install h5dict==0.2.0
运行一下 继续报错了
AttributeError: 'bytes' object has no attribute 'encode'但报错文档未出现encode（“utf-8”）
重启Jupyter notebook，重新打开即可