How to import local classes when using setuptools

Question

So my file system looks something like this

/projects
--setup.py
--setup.cfg
--/app
--/--__init__.py
--/--app.py
--/--file_with_class.py

In my app.py I import file_with_class.py, but when I use setup to install my module with pip install . and try running it, I get this error: ModuleNotFoundError: No module named 'className'

supose file_with_class.py contains a class named className

I'm importing this class in app.py like this:

from file_with_class import className

Also, when executing app.py on its own it works perfectly, the problem comes when creating the package with setuptools and after installing my own package, trying to run it.

Not sure how this is related to setuptools. You need to use relative imports: `from . import cls` (as a separate issue, you can't have a module named `class`) — mkrieger1, Mar 16 '21 at 10:19
I'm naming it class here just as an example meaning it contains a class, also I'm just importing it as `from class import class` — FranchoPlz, Mar 16 '21 at 10:26

score 0 · Answer 1 · answered Mar 16 '21 at 10:26

0

You can use relative import:

from . import class

answered Mar 16 '21 at 10:26

jeremy302

798
6
10

score 0 · Answer 2 · answered Mar 16 '21 at 10:27

You should use either relative, or fully qualified module name imports:

from . import class

# or, probably better:
import app.class
from app import class

BTW, class is a reserved word. Not sure if this was the module's name in your original code, but if it was you probably want to avoid it.

How to import local classes when using setuptools

2 Answers2