Python 2.7无法导入sklearn

Question

我安装了sklearn，版本：0.19.2，但无法导入。

请查看以下错误：

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-61-b7c74cbf5af0> in <module>()
----> 1 import sklearn

c:\python27\lib\site-packages\sklearn\__init__.py in <module>()
    131     # process, as it may not be compiled yet
    132 else:
--> 133     from . import __check_build
    134     from .base import clone
    135     __check_build  # avoid flakes unused variable error

ImportError: cannot import name __check_build