keras 在 PythonAnywhere 上运行多次时显示错误

Question

我正在处理一个导入库“keras”的文件

我使用 #!/usr/bin/python3.8 使用 python 3.8

当我在控制台中导入 keras 或 tensorflow 时，它工作正常，但是，当我运行导入 keras 或 tensorflow 的文件时，它只运行一次，然后再次运行时，它会显示以下错误消息：

TypeError: A Message class can only inherit from Message

除非我关闭控制台然后重新打开它，否则问题仍然存在

有什么解决办法吗？

注意：代码在本地使用 python3.9 运行时有效

注意：我没有在 PythonAnywhere 上使用 python 3.9，因为 tensorflow 不适用于它

我也试过python3.7

完整追溯：

Traceback (most recent call last):
  File "/home/leto/mysite/what.py", line 2, in <module>
    import keras
  File "/usr/local/lib/python3.8/dist-packages/keras/__init__.py", line 3, in <module>
    from tensorflow.keras.layers.experimental.preprocessing import RandomRotation
  File "/usr/local/lib/python3.8/dist-packages/tensorflow/__init__.py", line 41, in <module>
    from tensorflow.python.tools import module_util as _module_util
  File "/usr/local/lib/python3.8/dist-packages/tensorflow/python/__init__.py", line 41, in <module>
    from tensorflow.python.eager import context
  File "/usr/local/lib/python3.8/dist-packages/tensorflow/python/eager/context.py", line 32, in <module>
    from tensorflow.core.framework import function_pb2
  File "/usr/local/lib/python3.8/dist-packages/tensorflow/core/framework/function_pb2.py", line 16, in <module>
    from tensorflow.core.framework import attr_value_pb2 as tensorflow_dot_core_dot_framework_dot_attr__value__pb2
  File "/usr/local/lib/python3.8/dist-packages/tensorflow/core/framework/attr_value_pb2.py", line 16, in <module>
    from tensorflow.core.framework import tensor_pb2 as tensorflow_dot_core_dot_framework_dot_tensor__pb2
  File "/usr/local/lib/python3.8/dist-packages/tensorflow/core/framework/tensor_pb2.py", line 16, in <module>
    from tensorflow.core.framework import resource_handle_pb2 as tensorflow_dot_core_dot_framework_dot_resource__handle__pb2
  File "/usr/local/lib/python3.8/dist-packages/tensorflow/core/framework/resource_handle_pb2.py", line 16, in <module>
    from tensorflow.core.framework import tensor_shape_pb2 as tensorflow_dot_core_dot_framework_dot_tensor__shape__pb2
  File "/usr/local/lib/python3.8/dist-packages/tensorflow/core/framework/tensor_shape_pb2.py", line 110, in <module>
    'Dim' : _reflection.GeneratedProtocolMessageType('Dim', (_message.Message,), {
TypeError: A Message class can only inherit from Message
>>> 

Answer 1

有些包不兼容在同一进程中多次导入，我们 (PythonAnywhere) 保留该进程，以便在第一次之后在编辑器中运行代码更快。 当您想再次运行代码时，您可以从控制台运行代码或重置控制台（使用 ctrl-D）。