模块未找到错误：没有名为'sklearn.externals.six'的模块。

Question

我一直在收到这个错误

ModuleNotFoundError: No module named 'sklearn.externals.six'

当运行以下代码时：

from sklearn.datasets import load_iris
from sklearn.model_selection import train_test_split
import pandas as pd
import mglearn
import numpy as np
from IPython.display import display
import matplotlib as pl
import sklearn

iris_dataset = load_iris()
X_train, X_test, y_train, y_test = train_test_split(iris_dataset['data'], iris_dataset['target'], random_state=0)
iris_dataframe = pd.DataFrame(X_train, columns=iris_dataset.feature_names)
pd.plotting.scatter_matrix(iris_dataframe, c=y_train, figsize=(15, 15), marker='o', hist_kwds={'bins':20}, s=60, alpha=.8, cmap=mglearn.cm3)

是否有我没有导入或安装的模块？

- Fred Cozzi

---

我不熟悉这些包，但知道您安装了哪个版本的sklearn可能会有用。 - Bastian

请更新您的帖子，包括1）完整的错误跟踪（错误在哪里弹出？），以及您的scikit-learn版本（sklearn.__version__）。 - desertnaut

相关：https://stackoverflow.com/questions/61881987/getting-repeated-error-to-plot-using-mglearn - Bastian

Answer 1

你可以像下面这样使用...

from six import StringIO

- Mamun Or Rashid

---

为了替换诸如from sklearn.externals.six import StringIO这样的代码行，如果不可行，则应在导入包含有问题行的模块之前，使用下面详细说明的方法进行操作：sys.modules['sklearn.externals.six'] = six。 - Matteo Ferla

没错，@MatteoFerla。 - Mamun Or Rashid

Answer 2

您可以使用官方的six包。 首先，使用以下命令安装six：pip install six 然后导入该模块。无需降级scikit-learn。

- Ramesh Shah

Answer 3

模块sklearn.externals.six在版本0.23中已被移除。 如果您想使用这个模块，必须降级到版本0.22或更低。

- jv95

Answer 4

您可以尝试这个：-

import six
import sys
sys.modules['sklearn.externals.six'] = six

这对我有用。

参考来源- https://github.com/alkaline-ml/pmdarima/issues/355

- Trilochan_Singh

Answer 5

降级scikit-learn版本：

在jupyter notebook中进行以下操作：

!pip install --upgrade scikit-learn==0.20.3

在终端中：

pip install --upgrade scikit-learn==0.20.3

接下来，代码将会识别出sklearn.external.six 模块。

- Vigo Borges

Answer 6

仅需执行以下命令即可运行您的代码：

C:\Windows\system32>pip install sklearn
Collecting sklearn
  Downloading https://files.pythonhosted.org/packages/1e/7a/dbb3be0ce9bd5c8b7e3d87328e79063f8b263b2b1bfa4774cb1147bfcd3f/sklearn-0.0.tar.gz
Collecting scikit-learn (from sklearn)
  Downloading https://files.pythonhosted.org/packages/7e/e5/888491b7e2c16718a68dfd8498325e8927003410b2d19ba255d8751338a5/scikit_learn-0.23.1-cp38-cp38-win_amd64.whl (6.8MB)
     |████████████████████████████████| 6.8MB 2.2MB/s
Collecting joblib>=0.11 (from scikit-learn->sklearn)
  Downloading https://files.pythonhosted.org/packages/b8/a6/d1a816b89aa1e9e96bcb298eb1ee1854f21662ebc6d55ffa3d7b3b50122b/joblib-0.15.1-py3-none-any.whl (298kB)
     |████████████████████████████████| 307kB 3.2MB/s
Collecting threadpoolctl>=2.0.0 (from scikit-learn->sklearn)
  Downloading https://files.pythonhosted.org/packages/db/09/cab2f398e28e9f183714afde872b2ce23629f5833e467b151f18e1e08908/threadpoolctl-2.0.0-py3-none-any.whl
Requirement already satisfied: numpy>=1.13.3 in c:\python38\lib\site-packages (from scikit-learn->sklearn) (1.18.4)
Collecting scipy>=0.19.1 (from scikit-learn->sklearn)
  Downloading https://files.pythonhosted.org/packages/f8/b9/98a75846fdda3756ce75705b518dde4c599ba419d11415ce3fe1ebc4a885/scipy-1.4.1-cp38-cp38-win_amd64.whl (31.0MB)
     |████████████████████████████████| 31.0MB 1.1MB/s
Installing collected packages: joblib, threadpoolctl, scipy, scikit-learn, sklearn
  Running setup.py install for sklearn ... done
Successfully installed joblib-0.15.1 scikit-learn-0.23.1 scipy-1.4.1 sklearn-0.0 threadpoolctl-2.0.0
WARNING: You are using pip version 19.2.3, however version 20.1.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

C:Windows\system32>pip install mglearn
Collecting mglearn
  Downloading https://files.pythonhosted.org/packages/65/38/8aced26fce0b2ae82c3c87cd3b6105f38ca6d9d51704ecc44aa54473e6b9/mglearn-0.1.9.tar.gz (540kB)
     |████████████████████████████████| 542kB 1.3MB/s
Requirement already satisfied: numpy in c:\python38\lib\site-packages (from mglearn) (1.18.4)
Requirement already satisfied: matplotlib in c:\python38\lib\site-packages (from mglearn) (3.2.1)
Requirement already satisfied: scikit-learn in c:\python38\lib\site-packages (from mglearn) (0.23.1)
Requirement already satisfied: pandas in c:\python38\lib\site-packages (from mglearn) (1.0.3)
Collecting pillow (from mglearn)
  Downloading https://files.pythonhosted.org/packages/91/9e/1b45eed618c35010d8cc3ba57f12baf09af37054665b7cdf79aafa93ed75/Pillow-7.1.2-cp38-cp38-win_amd64.whl (2.0MB)
     |████████████████████████████████| 2.0MB 2.2MB/s
Requirement already satisfied: cycler in c:\python38\lib\site-packages (from mglearn) (0.10.0)
Collecting imageio (from mglearn)
  Downloading https://files.pythonhosted.org/packages/4c/2b/9dd19644f871b10f7e32eb2dbd6b45149c350b4d5f2893e091b882e03ab7/imageio-2.8.0-py3-none-any.whl (3.3MB)
     |████████████████████████████████| 3.3MB 126kB/s
Requirement already satisfied: joblib in c:\python38\lib\site-packages (from mglearn) (0.15.1)
Requirement already satisfied: pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=2.0.1 in c:\python38\lib\site-packages (from matplotlib->mglearn) (2.4.7)
Requirement already satisfied: kiwisolver>=1.0.1 in c:\python38\lib\site-packages (from matplotlib->mglearn) (1.2.0)
Requirement already satisfied: python-dateutil>=2.1 in c:\python38\lib\site-packages (from matplotlib->mglearn) (2.8.1)
Requirement already satisfied: scipy>=0.19.1 in c:\python38\lib\site-packages (from scikit-learn->mglearn) (1.4.1)
Requirement already satisfied: threadpoolctl>=2.0.0 in c:\python38\lib\site-packages (from scikit-learn->mglearn) (2.0.0)
Requirement already satisfied: pytz>=2017.2 in c:\python38\lib\site-packages (from pandas->mglearn) (2020.1)
Requirement already satisfied: six in c:\python38\lib\site-packages (from cycler->mglearn) (1.14.0)
Installing collected packages: pillow, imageio, mglearn
  Running setup.py install for mglearn ... done
Successfully installed imageio-2.8.0 mglearn-0.1.9 pillow-7.1.2
WARNING: You are using pip version 19.2.3, however version 20.1.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

请注意，我的系统上安装了这个版本的Python：

C:\Windows\system32>python --version
Python 3.8.3

这是我系统上的sklearn和mglearn版本：

C:\Windows\system32>pip list
...
mglearn           0.1.9
...
scikit-learn      0.23.1
...

- user8128167

Answer 7

根据您使用的IDE，如果是Spyder，则必须使用以下代码将Spyder kernel添加到Python安装中：

pip install spyder-kernels

- Paul Ntalo

Answer 8

在升级版本后，它已被移除, 在pandas 0.22模块中会有它的替代，即sklearn.external.six。如果还有疑问，请查看文档。

- Amanshivhare1

Answer 9

模块未找到错误：没有名为“sklearn.externals”的模块；'sklearn'不是一个包

我遇到了这个错误，尝试了所有方法都不行。最终意识到我在目录中命名了一个文件为“sklearn.py”...

- far1din

Answer 10

替换固定的标题
import six

- joe