CODEWITHSUNDEEP
pythondjangoimportpackage
sj_magento
sj_magento

Reputation: 121

Python relative import error?

ı have a django project and i need to access some of models in my folder that under the django main project folder.Let me illustrate this.

    src\
        main\
            urls.py
            models.py
            view.py
        lib\
            __init__.py
            helper.py

This is the example folder structure and i need to import some class of main app's models inside the helper.py.I tried these:

           from main.models import exampleClass
           from ..main.models import exampleClass

And i also tried adding a __init__.py file in the main project folder:

           src\
               ...
               main\
               lib\
               __init__.py

Always errors 2 kind :

1)ValueError : relative import error 2) no module name..

I need the solution and need good explanation why i failed always.Thank you so much guys.

Upvotes: 0

Views: 346

Answers (3)

Dric512
Dric512

Reputation: 3729

How did you set $PYTHONPATH variable ? The search paths are relative to this environment variable.

So if you want to specify a path like main.models, it should contain the src directory.

Note that you can also manage it with the sys.path array.

Django normally add all the applications to sys.path. You may try to print it inside the settings.py file to have an idea.

To add a path from the settings.py file of the project, you could do something like:

import os.path
BASE_DIR = os.path.dirname(os.path.dirname(__file__))
sys.path.append(os.path.join(BASE_DIR, "../lib"))

If for example you have a lib directory at the same level as the directory that contains the settings.py file.

Upvotes: 0

Gocht
Gocht

Reputation: 10256

You don't need .. if main and lib are both django's apps, and you have registered them in INSTALLED_APPS settings.

If main and lib are in the same level that manage.py:

src/
    main/
        ...
    lib/
        ...
    manage.py
    ...

You just need:

from main.models import exampleClass

Upvotes: 0

Moinuddin Quadri
Moinuddin Quadri

Reputation: 48090

Add __init__.py in main folder instead of src folder. Then try to import using from main.models import exampleClass. It should be working.

Upvotes: 1

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