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    python sklearn找不到指定模块

    yangyang2020-04-17 09:31:03原创5010

    在 import sklearn.manifold时出现 ImportError: DLL load failed:找不到指定的模块,具体如下:

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    Traceback (most recent call last):

      File "<stdin>", line 1, in <module>

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\sklearn\manifold\__init__.py", line 5, in <module>

        from .locally_linear import locally_linear_embedding, LocallyLinearEmbedding

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\sklearn\manifold\locally_linear.py", line 17, in <module>

        from ..neighbors import NearestNeighbors

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\sklearn\neighbors\__init__.py", line 9, in <module>

        from .graph import kneighbors_graph, radius_neighbors_graph

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\sklearn\neighbors\graph.py", line 7, in <module>

        from .base import KNeighborsMixin, RadiusNeighborsMixin

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\sklearn\neighbors\base.py", line 18, in <module>

        from ..metrics import pairwise_distances

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\sklearn\metrics\__init__.py", line 35, in <module>

        from . import cluster

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\sklearn\metrics\cluster\__init__.py", line 20, in <module>

        from .unsupervised import silhouette_samples

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\sklearn\metrics\cluster\unsupervised.py", line 12, in <module>

        from ..pairwise import pairwise_distances

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\sklearn\metrics\pairwise.py", line 30, in <module>

        from .pairwise_fast import _chi2_kernel_fast, _sparse_manhattan

    ImportError: DLL load failed: 找不到指定的模块。

    解决方法:

    在保证scipy和numpy成功安装的条件下,并且安装了pip后使用命令 pip install -U scikit-learn 更新一下即可。

    若遇到如下问题:

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    Exception:

    Traceback (most recent call last):

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\shutil.py", line 387, in _rmtree_unsafe

        os.unlink(fullname)

    PermissionError: [WinError 5] 拒绝访问。: 'C:\\Users\\user\\AppData\\Local\\Temp\\pip-njirl_1q-uninstall\\users\\user\\appdata\\local\\programs\\python\\python36\\lib\\site-packages\\sklearn\\feature_extraction\\_hashing.cp36-win_amd64.pyd'

      

    During handling of the above exception, another exception occurred:

      

    Traceback (most recent call last):

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\basecommand.py", line 215, in main

        status = self.run(options, args)

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\commands\install.py", line 342, in run

        prefix=options.prefix_path,

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\req\req_set.py", line 795, in install

        requirement.commit_uninstall()

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\req\req_install.py", line 767, in commit_uninstall

        self.uninstalled.commit()

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\req\req_uninstall.py", line 142, in commit

        rmtree(self.save_dir)

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\_vendor\retrying.py", line 49, in wrapped_f

        return Retrying(*dargs, **dkw).call(f, *args, **kw)

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\_vendor\retrying.py", line 212, in call

        raise attempt.get()

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\_vendor\retrying.py", line 247, in get

        six.reraise(self.value[0], self.value[1], self.value[2])

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\_vendor\six.py", line 686, in reraise

        raise value

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\_vendor\retrying.py", line 200, in call

        attempt = Attempt(fn(*args, **kwargs), attempt_number, False)

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\utils\__init__.py", line 102, in rmtree

        οnerrοr=rmtree_errorhandler)

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\shutil.py", line 494, in rmtree

        return _rmtree_unsafe(path, onerror)

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\shutil.py", line 384, in _rmtree_unsafe

        _rmtree_unsafe(fullname, onerror)

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\shutil.py", line 384, in _rmtree_unsafe

        _rmtree_unsafe(fullname, onerror)

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\shutil.py", line 384, in _rmtree_unsafe

        _rmtree_unsafe(fullname, onerror)

      [Previous line repeated 7 more times]

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\shutil.py", line 389, in _rmtree_unsafe

        onerror(os.unlink, fullname, sys.exc_info())

      File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\utils\__init__.py", line 114, in rmtree_errorhandler

        func(path)

    PermissionError: [WinError 5] 拒绝访问。: 'C:\\Users\\user\\AppData\\Local\\Temp\\pip-njirl_1q-uninstall\\users\\user\\appdata\\local\\programs\\python\\python36\\lib\\site-packages\\sklearn\\feature_extraction\\_hashing.cp36-win_amd64.pyd'

    使用 pip install --user package_name命令即可解决。

    更多Python知识请关注Python视频教程栏目。

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