[英]How to import python modules from sibling directory?
I have a python (3.6.3) project which has the following structure 我有一个具有以下结构的python(3.6.3)项目
setup.py
utils #python package
utils/constants.py
utils/name_reports.py
normalization #python package
normalization/resolve_name.py
categorization #python package
categorization/animal_categories.py
You can find the source code here on github - https://github.com/techmango-org/python-import-resolution 您可以在github上找到源代码-https: //github.com/techmango-org/python-import-resolution
Here is the source code for utils/name_reports.py
这是
utils/name_reports.py
的源代码
import normalization.resolve_name as rn
import categorization.animal_categories as ac
test_name = 'DOGY'
resolved_name = rn.get_animal_name(test_name)
print('********ANIMAL CATEGORY IS:', ac.get_animal_score(resolved_name))
When I run python utils/name_reports.py
I am getting the following exception 当我运行
python utils/name_reports.py
时,出现以下异常
Traceback (most recent call last):
File "utils/name_reports.py", line 1, in <module>
import normalization.resolve_name as rn
ModuleNotFoundError: No module named 'normalization'
I have tried to solve this problem by installing the current package into virtual env site packages by running pip install .
我试图通过运行
pip install .
将当前软件包安装到虚拟环境站点软件包中来解决此问题pip install .
but that means for every local change I have to run pip install --upgrade .
但这意味着对于每个本地更改,我都必须运行
pip install --upgrade .
to move my local changes into site packages. 将我的本地更改移到站点包中。
I have been using a hack -m unittest
to get this problem solved. 我一直在使用hack
-m unittest
来解决此问题。 Check this screenshot 查看此屏幕截图
But I am unable to understand what difference does it create. 但是我无法理解它会带来什么不同。 Here are the exact questions -
这是确切的问题-
-m unittest
is creating which is solving this issue? -m unittest
在解决这个问题上有什么区别? Since there are already many answers on SO for this*, I will focus on question (2). 由于SO *已经有很多答案,因此我将重点关注问题(2)。 About what is a better code organization:
关于什么是更好的代码组织:
|- setup.py
|- top_pkg_name
|- __init__.py
|- pkg1
|- __init__.py
|- pkg2
|- __init__.py
The (relative) import is done as follows, from inside module_2
: (相对)导入是从
module_2
内部完成的,如下所示:
from ..pkg1 import module1 as m1
Alternatively, you can use absolute imports, which refer to the top package name: 另外,您可以使用绝对导入,这是指顶级软件包名称:
from top_pkg_name.pkg1 import module1 as m1
In such an organization, when you want to run any module as a script, you have to use the -m
flag: 在这样的组织中,当您想将任何模块作为脚本运行时,必须使用
-m
标志:
python -m top_pkg_name.pkg1.module1
For question (3), I'm not sure but it looks like the unittest
module adds the folder to path, allowing the imports to happen directly. 对于问题(3),我不确定,但是看起来好像
unittest
模块将文件夹添加到路径,从而允许直接进行导入。
*Refer: *参考:
Use Import statements: 使用导入语句:
from normalization import resolve_name
from categorization import animal_categories
Your Code: 您的代码:
from normalization import resolve_name as rn
from categorization import animal_categories as ac
test_name = 'DOGY'
resolved_name = rn.get_animal_name(test_name)
print('********ANIMAL CATEGORY IS:', ac.get_animal_score(resolved_name))
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