ImportError:没有名为nose.tools的模块

Question

我在将数据集加载到程序时遇到了一些困难.我不确定如下所述的导入错误.

Traceback (most recent call last):
  File "C:\Users\Khoo Family\Downloads\lsa_clustering (3).py", line 4, in <module>
    from sklearn.datasets import fetch_20newsgroups
  File "C:\Python27\lib\site-packages\sklearn\datasets\__init__.py", line 7, in <module>
    from .base import load_diabetes
  File "C:\Python27\lib\site-packages\sklearn\datasets\base.py", line 25, in <module>
    from ..utils import check_random_state
  File "C:\Python27\lib\site-packages\sklearn\utils\__init__.py", line 11, in <module>
    from .validation import (as_float_array, check_arrays, safe_asarray,
  File "C:\Python27\lib\site-packages\sklearn\utils\validation.py", line 17, in <module>
    from .fixes import safe_copy
  File "C:\Python27\lib\site-packages\sklearn\utils\fixes.py", line 18, in <module>
    from .testing import ignore_warnings
  File "C:\Python27\lib\site-packages\sklearn\utils\testing.py", line 36, in <module>
    from nose.tools import assert_equal
ImportError: No module named nose.tools

Answer 1

检查安装的python包列表中是否有nose.您可以在python控制台中执行此操作(Windows + R,键入cmd然后输入,键入python然后输入):

>>> help('modules')

如果有鼻子,那么在运行代码或使用其他解释器运行控制台和代码时,您可能遇到PYTHONPATH问题.

如果鼻子不在列表中,请在控制台中执行(Windows + R,键入cmd,然后输入):

pip install nose