ImportError:导入sklearn.mixture时无法导入名称选项

Question

我使用的是scikit learn 0.15.0。当我尝试导入名称时，出现ImportError: cannot import name sklearn.mixture

有什么想法吗？

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In [1]: **from sklearn import mixture**

ImportError                               Traceback (most recent call last)
<ipython-input-1-05bc76cab98d> in <module>()
----> 1 from sklearn import mixture

/home/f/anaconda/lib/python2.7/site-packages/sklearn/mixture/__init__.py in <module>()
      3 """
      4
----> 5 from .gmm import sample_gaussian, log_multivariate_normal_density
      6 from .gmm import GMM, distribute_covar_matrix_to_match_covariance_type
      7 from .gmm import _validate_covars

/home/f/anaconda/lib/python2.7/site-packages/sklearn/mixture/gmm.py in <module>()
     16 from ..utils import check_random_state, deprecated
     17 from ..utils.extmath import logsumexp, pinvh
---> 18 from .. import cluster
     19
     20 from sklearn.externals.six.moves import zip

/home/f/anaconda/lib/python2.7/site-packages/sklearn/cluster/__init__.py in <module>()
      4 """
      5
----> 6 from .spectral import spectral_clustering, SpectralClustering
      7 from .mean_shift_ import mean_shift, MeanShift, estimate_bandwidth, \
      8     get_bin_seeds

/home/f/anaconda/lib/python2.7/site-packages/sklearn/cluster/spectral.py in <module>()
     16 from ..neighbors import kneighbors_graph
     17 from ..manifold import spectral_embedding
---> 18 from .k_means_ import k_means
     19
     20

/home/f/anaconda/lib/python2.7/site-packages/sklearn/cluster/k_means_.py in <module>()
     28 from ..utils import as_float_array
     29 from ..utils import gen_batches
---> 30 from ..utils.random import choice
     31 from ..externals.joblib import Parallel
     32 from ..externals.joblib import delayed

ImportError: cannot import name choice

Answer 1

from sklearn.mixture import GaussianMixture

使用它将使其更具体地与.gmm一起工作，

和

from sklearn.cluster import KMeans

适用于：

     16 from ..neighbors import kneighbors_graph
     17 from ..manifold import spectral_embedding
---> 18 from .k_means_ import k_means

Answer 2

如前所述，它可能与旧文件有关(这些文件是在python中实现的，而不是库？)在您可能使用pip install -U包名称(在我的例子中是pip install -U scikit-learn)更新的新包中，在手动删除内容之前，可能需要先卸载该包并重新安装。(在我的例子中有效)卸载(在我的例子中在Anaconda命令提示符下运行)：

   pip uninstall scikit-learn

然后：

   pip install -U numpy scipy scikit-learn

(为了以防万一，添加了依赖项)然后只是为了确保

   pip install scikit-learn

应该说已经安装好了

Answer 3

当我尝试import KMeans时，我得到了相同的错误：from sklearn.cluster import KMeans

Error > ImportError: cannot import name choice

我在这里找到了答案：https://github.com/scikit-learn/scikit-learn/issues/3461

因为我几天前升级到了Scikit版本0.15，所以 random.so的旧版本出现在 /usr/local/lib/python2.7/dist-packages/sklearn/utils中。

我手动删除了它，现在我不再收到错误。

希望这能有所帮助。