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我有一个带有多个类和文件的Python项目。
这是我的文件夹结构：
main.py
directory
|_ parent_class.py
|_sub_directory_1
|_child_class_1.py
|_sub_directory_2
|_child_class_2.py
我在所有文件中使用了相同的导入，例如pandas和numpy。有没有办法一次导入这些时间，以便我的代码更干净？ 非常感谢。
I have a python project with multiple classes and files.
This is my folder structure:
main.py
directory
|_ parent_class.py
|_sub_directory_1
|_child_class_1.py
|_sub_directory_2
|_child_class_2.py
I am using the same imports like pandas and numpy e.g. in all files. Is there a way to import those a single time so my code is cleaner?
Many Thanks in advance.
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有一种方法可以将您的导入在父模块中，然后从parent_module导入 *。
但是，我不建议这样做，因为您的项目的发展越多，您就越有可能产生循环进口！
我要说的是，最好的做法是仅导入您真正需要的包装/模块。如果您想要一个清洁的代码库，我可以建议您使用 isort 它将自动格式化您的导入！
There is a way to "refacto" your imports inside a parent module and then import * from parent_module.
However I would not recommend such practice as the more your project grows the more likely you are to produce circular imports !
I would say that the best practice is to only import your packages/modules where you really need them. If you want a cleaner code base, I can suggest you tools such as isort that will automatically format your imports !
除非有所有其他文件导入的单个文件，否则您将无法执行此操作。即使在这种情况下，您要么必须使用＆lt; file＆gt;导入 *（这不是一个好练习），或使用
＆lt; file＆gt;。od; module＆gt;每次您要参考这些模块之一，这只是使事物不必要地长时间长。因此，这样做通常不是一个好主意...
...但是，如果所有文件共享了很多导入，并且您确定这样做会使您的代码更加清晰，那么您可以考虑创建一个新文件专门用于此目的。
例如，您可以在顶级添加一个名为
common_imports的文件，将所有导入放入其中，然后在每个文件开始时只能从common_imports import *中使用。因此：
common_imports.py
其他文件
You can't do this unless there is a single file which is imported by all of the other files. And even in that case, you either have to use
from <file> import *(which is not a good practice), or use<file>.<module>every time you want to reference one of those modules, which just makes things unnecessarily long.Therefore, doing this is not usually a good idea...
...However, if there are a lot of imports shared by all files and you are sure that doing this would make your code much clearer, you could consider creating a new file specifically for this purpose.
For example, you could add a file called
common_importsat the top level, put all the imports in there, and just usefrom common_imports import *at the start of each file.So:
common_imports.py
Other files