“From__Future__Import Absolute_Import”不禁用Jupyter笔记本中的相对导入。怎么修？

Question

从这篇文章：

Python：禁用相对导入

表示可以通过以下方式禁用相对导入：

from __future__ import absolute_import

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-2-e38c4f8fc4a0> in <module>
      1 from __future__ import absolute_import
      2 
----> 3 from networkx import drawing

ImportError: cannot import name 'drawing'

from __future__ import absolute_import
import os
import sys


for p in sys.path:
    print(p)

print("=================")

import networkx
print(os.path.abspath(networkx.__file__))

from networkx import drawing

结果：

> /home/shared/anaconda3/lib/python36.zip
> /home/shared/anaconda3/lib/python3.6
> /home/shared/anaconda3/lib/python3.6/lib-dynload
> /home/peng/.local/lib/python3.6/site-packages
> /home/shared/anaconda3/lib/python3.6/site-packages
> /home/shared/anaconda3/lib/python3.6/site-packages/IPython/extensions
> /home/peng/.ipython
> ================= /home/peng/git/convnet-abstraction/slide/package/networkx.py
> --------------------------------------------------------------------------- ImportError                               Traceback (most recent call
> last) <ipython-input-4-d28ac292787c> in <module>
>      12 print(os.path.abspath(networkx.__file__))
>      13 
> ---> 14 from networkx import drawing
> 
> ImportError: cannot import name 'drawing'

这里是另一张截图：

Answer 1

相对进口与此无关。发生的情况是sys.path可能类似于：

[
 '',  # the current directory
 'C:\\Program Files\\Python 3.5\\python35.zip',
 'C:\\Program Files\\Python 3.5\\DLLs',
 'C:\\Program Files\\Python 3.5\\lib',
 'C:\\Program Files\\Python 3.5', 
 #network x is in one of these two
 'C:\\Users\\<you>\\AppData\\Roaming\\Python\\Python35\\site-packages',
 'C:\\Program Files\\Python 3.5\\lib\\site-packages'
]

当您键入import networkx时，它会按顺序遍历这些目录，查找networkx.py。它会先在你的“无标题文件夹”中找到一个。

解决此问题的最佳方法是重命名文件，或将其放在一个子目录mystuff/networkx中

这是一个坏主意，但您也可以执行sys.path.remove('')来删除第一个条目。