python - ImportError: 'Reader' 无法从意外中导入

Question

用 pip 安装惊喜后，我无法运行任何代码。

当我尝试在 JupyterLab 中运行我的第一个与意外相关的代码时，我收到一条错误消息，与无法从意外中导入“阅读器”类这一事实相关。

这是我的代码的开头：

import pandas as pd
import numpy as np
import metrics_lib as ml
import matplotlib.pyplot as plt
from surprise import Reader, SVD, Dataset
from surprise.model_selection import train_test_split

这是错误：

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-ac7f0fc68d68> in <module>
      3 import metrics_lib as ml
      4 import matplotlib.pyplot as plt
----> 5 from surprise import Reader, SVD, Dataset
      6 from surprise.model_selection import train_test_split
      7 

ImportError: cannot import name 'Reader' from 'surprise' (unknown location)

我不明白为什么这个类不能自动导入......请帮忙。

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我检查了我的 PYTHONPATH 并没有任何惊奇.py 的迹象，这是我的 PYTHONPATH 中的内容列表：

>>> import sys
>>> for p in sys.path:
...     print(p)
... 

/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload
/Users/miu/Library/Python/2.7/lib/python/site-packages
/Library/Python/2.7/site-packages
/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python
/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC

标签： pythonpython-3.xjupyter-labrecommender-systems