Question

我在OS X上安装了Anaconda。我可以从python终端和IPython终端导入sklearn。但是当我尝试从Jupyter笔记本导入sklearn时，我收到以下错误：

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-4-8fd979e02004> in <module>()
----> 1 import sklearn

/Users/joe/anaconda/envs/data_env/lib/python3.5/site-packages/sklearn/__init__.py in <module>()
     55 else:
     56     from . import __check_build
---> 57     from .base import clone
     58     __check_build  # avoid flakes unused variable error
     59 

/Users/joe/anaconda/envs/data_env/lib/python3.5/site-packages/sklearn/base.py in <module>()
     10 from scipy import sparse
     11 from .externals import six
---> 12 from .utils.fixes import signature
     13 from .utils.deprecation import deprecated
     14 from .exceptions import ChangedBehaviorWarning as _ChangedBehaviorWarning

/Users/joe/anaconda/envs/data_env/lib/python3.5/site-packages/sklearn/utils/__init__.py in <module>()
      9 
     10 from .murmurhash import murmurhash3_32
---> 11 from .validation import (as_float_array,
     12                          assert_all_finite,
     13                          check_random_state, column_or_1d, check_array,

/Users/joe/anaconda/envs/data_env/lib/python3.5/site-packages/sklearn/utils/validation.py in <module>()
     16 
     17 from ..externals import six
---> 18 from ..utils.fixes import signature
     19 from .deprecation import deprecated
     20 from ..exceptions import DataConversionWarning as _DataConversionWarning

/Users/joe/anaconda/envs/data_env/lib/python3.5/site-packages/sklearn/utils/fixes.py in <module>()
    288     from ._scipy_sparse_lsqr_backport import lsqr as sparse_lsqr
    289 else:
--> 290     from scipy.sparse.linalg import lsqr as sparse_lsqr
    291 
    292 

/Users/joe/anaconda/envs/data_env/lib/python3.5/site-packages/scipy/sparse/linalg/__init__.py in <module>()
    110 from __future__ import division, print_function, absolute_import
    111 
--> 112 from .isolve import *
    113 from .dsolve import *
    114 from .interface import *

/Users/joe/anaconda/envs/data_env/lib/python3.5/site-packages/scipy/sparse/linalg/isolve/__init__.py in <module>()
      4 
      5 #from info import __doc__
----> 6 from .iterative import *
      7 from .minres import minres
      8 from .lgmres import lgmres

/Users/joe/anaconda/envs/data_env/lib/python3.5/site-packages/scipy/sparse/linalg/isolve/iterative.py in <module>()
      5 __all__ = ['bicg','bicgstab','cg','cgs','gmres','qmr']
      6 
----> 7 from . import _iterative
      8 
      9 from scipy.sparse.linalg.interface import LinearOperator

ImportError: dlopen(/Users/joe/anaconda/envs/data_env/lib/python3.5/site-packages/scipy/sparse/linalg/isolve/_iterative.so, 2): Library not loaded: /usr/local/lib/libgcc_s.1.dylib
  Referenced from: /Users/joe/anaconda/envs/data_env/lib/python3.5/site-packages/scipy/sparse/linalg/isolve/_iterative.so
  Reason: image not found

我可以从Jupyter笔记本中导入numpy，scipy和pandas。只是sklearn失败了。

我也尝试过创建一个新的conda环境（conda create -n test_env jupyter notebook matplotlib scipy numpy pandas scikit-learn），但错误仍然存在于新环境中。

Answer 1

我设法弄清楚发生了什么，所以我会在这里发布我的解决方案以防其他人遇到同样的问题。事实证明，当我安装了另一个软件时，我修改了DYLD_FALLBACK_LIBRARY_PATH文件中的.bashrc环境变量。将此环境变量恢复为默认值可以解决我的问题。

（顺便提一下，scikit-learn也没能在标准的Python终端中导入。我最初没有意识到这一点，因为我在一个环境中测试了Python终端，在这个环境中我意外地将环境变量恢复为默认值，覆盖我在.bashrc文件中所做的更改。）

Scikit-learn无法仅在Jupyter笔记本中导入

1 个答案: