导语：
本文主要介绍了关于python sklearn找不到指定模块的相关知识，包括python打包exe找不到模块，以及python无法调用模块这些编程知识，希望对大家有参考作用。
在 import sklearn.manifold时出现 ImportError: DLL load failed：找不到指定的模块，具体如下：
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scipy和numpy安装成功的情况下，安装pip后，使用命令pip install -U scikit-learn进行更新。
若遇到如下问题：
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。
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