Python中的相对导入 [英] Relative imports in Python
问题描述
嘿所有 - 我用Python中的相对导入拉出我的头发。我已经阅读了30次文档和SO和其他论坛上的大量帖子 - 似乎仍然没有用。
Hey all -- I am pulling my hair out with relative imports in Python. I've read the documentation 30 times and numerous posts here on SO and other forums -- still doesn't seem to work.
我的目录结构目前看起来像这样
My directory structure currently looks like this
src/
__init__.py
main.py
components/
__init__.py
expander.py
language_id.py
utilities/
__init__.py
functions.py
我希望expandder.py和language_id.py能够访问功能模块。我运行python main.py,它可以很好地从components.expander import *和components.language_id import *。访问模块。
I want expander.py and language_id.py to have access to the functions module. I run python main.py which accesses the modules just fine with from components.expander import * and components.language_id import *.
然而,扩展器内的代码和language_id到访问功能模块:
However, the code inside expander and language_id to access the functions module:
from ..utilities.functions import *
我收到此错误:
ValueError: Attempted relative import beyond toplevel package
我已经过了很多次,似乎遵循文档。任何人对这里出了什么问题都有任何想法吗?
I have gone over it a bunch of times and it seems to follow the documentation. Anyone have any ideas of what's going wrong here?
推荐答案
没关系,我解决了这个问题:
Nevermind, I solved it:
src/
main.py
mod/
__init__.py
components/
__init__.py
expander.py
language_id.py
utilities/
__init__.py
functions.py
main.py然后将子包引用为:
main.py then refers to the subpackages as:
from mod.components.expander import *
from mod.utilities.functions import *
expander.py和language_id.py可以访问functions.py,其中包含:
expander.py and language_id.py have access to functions.py with:
from ..utilities.functions import *
但有趣的是我在componentsder.py使用的components目录中有一个文本文件。但是,在运行时,即使文件位于同一目录中,也无法找到该文件。我将文本文件移动到与main.py相同的目录,并且它工作正常。似乎违反直觉。
But the interesting thing is that I had a text file inside the components directory that expander.py uses. However, at runtime it couldn't locate the file even though it was in the same directory. I moved the text file to the same directory as main.py and it worked. Seems counter-intuitive.
这篇关于Python中的相对导入的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!