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python - 在 python shell 中导入 pybrain 时出错

问题描述

我试图导入 pybrain，它在下面给了我这个错误。

>>>import pybrain

错误：

Traceback (most recent call last):
  File "<pyshell#33>", line 1, in <module>
    import pybrain
  File "C:\Program Files\Python37\lib\site-packages\pybrain\__init__.py", line 1, in <module>
    from pybrain.structure.__init__ import *
  File "C:\Program Files\Python37\lib\site-packages\pybrain\structure\__init__.py", line 2, in <module>
    from pybrain.structure.modules.__init__ import *
  File "C:\Program Files\Python37\lib\site-packages\pybrain\structure\modules\__init__.py", line 2, in <module>
    from pybrain.structure.modules.gate import GateLayer, DoubleGateLayer, MultiplicationLayer, SwitchLayer
  File "C:\Program Files\Python37\lib\site-packages\pybrain\structure\modules\gate.py", line 10, in <module>
    from pybrain.tools.functions import sigmoid, sigmoidPrime
  File "C:\Program Files\Python37\lib\site-packages\pybrain\tools\functions.py", line 4, in <module>
    from scipy.linalg import inv, det, svd, logm, expm2
ImportError: cannot import name 'expm2' from 'scipy.linalg' (C:\Users\Rahul Bansal\AppData\Roaming\Python\Python37\site-packages\scipy\linalg\__init__.py)

或者如果尝试

>>> from pybrain.structure.__init__ import *

Traceback (most recent call last):
  File "<pyshell#34>", line 1, in <module>
    from pybrain.structure.__init__ import *
  File "C:\Program Files\Python37\lib\site-packages\pybrain\__init__.py", line 1, in <module>
    from pybrain.structure.__init__ import *
  File "C:\Program Files\Python37\lib\site-packages\pybrain\structure\__init__.py", line 2, in <module>
    from pybrain.structure.modules.__init__ import *
  File "C:\Program Files\Python37\lib\site-packages\pybrain\structure\modules\__init__.py", line 2, in <module>
    from pybrain.structure.modules.gate import GateLayer, DoubleGateLayer, MultiplicationLayer, SwitchLayer
  File "C:\Program Files\Python37\lib\site-packages\pybrain\structure\modules\gate.py", line 10, in <module>
    from pybrain.tools.functions import sigmoid, sigmoidPrime
  File "C:\Program Files\Python37\lib\site-packages\pybrain\tools\functions.py", line 4, in <module>
    from scipy.linalg import inv, det, svd, logm, expm2
ImportError: cannot import name 'expm2' from 'scipy.linalg' (C:\Users\Rahul Bansal\AppData\Roaming\Python\Python37\site-packages\scipy\linalg\__init__.py)

请帮我正确导入pybrain。

标签： pythonimporterrorpybrain

解决方案

scipy.linalg.expm2已在 0.13.0 版本中贬值（当前版本为 1.4.1）。我不知道您使用的是哪一个 - pybrain或pybrain3包，但两者看起来都已经过时了 - 最后一次提交是在 2017 年

编辑：您有 3 个选项：

  • 使用 scipy 0.13.0 之前的版本，而不是最新的 1.4.1
  • 联系pbrain作者，使其与最新版本的 scipy 或
  • 寻找替代品pbrain。

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