从另一个文件导入类[重复]

This question already has an answer here:

这个问题在这里已有答案:

Importing files from different folder 20 answers

导入来自不同文件夹的文件20个答案

Before you mark it as duplicate please read my problem:

在将其标记为重复之前,请阅读我的问题:

I am trying to import a class from a file from a subdirectory

我试图从子目录中的文件导入一个类

> main.py
> --->folder/
> ----->file.py

and in file.py i have a class imlpemented ( Klasa) What have I tried:

并在file.py我有一个类imlpemented(Klasa)我尝试了什么:

putting in main.py:

放入main.py:

from folder import file
from file import Klasa

I am getting the error:

我收到错误:

from file import Klasa

从文件导入Klasa

ImportError: No module named 'file'

ImportError:没有名为'file'的模块

When I try to use just:

当我尝试使用时:

from folder import file

I get this error:

我收到此错误:

tmp = Klasa()

tmp = Klasa()

NameError: name 'Klasa' is not defined

NameError:未定义名称“Klasa”

I have put an empty __init__.py in the subfolder and it still does not work, and I have put in the __init__.py : from file import Klasa and still doesnt work.

我在子文件夹中放了一个空的__init__.py,它仍然无效,我已经放入__init__.py:从文件导入Klasa,但仍然无法正常工作。

If main and file are in the same folder this work:

如果main和file在同一个文件夹中,则可以正常工作:

from file import Klasa

从文件导入Klasa

but i want them to be in separate files.

但我希望他们在单独的文件中。

Can someone tell me what i am doing wrong?

有人能告诉我我做错了什么吗?

1 个解决方案

#1

Your problem is basically that you never specified the right path to the file.

您的问题基本上是您从未指定文件的正确路径。

Try instead, from your main script:

请尝试从您的主脚本:

from folder.file import Klasa

Or, with from folder import file:

或者,使用from folder import file:

from folder import file
k = file.Klasa()

Or again:

import folder.file as myModule
k = myModule.Klasa()

#1