我的自定义模块的导入无法解决

Question

I've done some searching, but nothing either works or applies to this specific case.

I have a file structure like this:

- my_project
   - app.py
   - my_project
      - services
         - begin.py
         - data_analysis.py
         - model_creation.py
         - output.py

and I am trying to simply import each of the modules into the app.py file so I can run a flask application, but I keep getting an import with only one of the imports (and it is always the same one). For example, if I ran python app.py , I would get:

File "C:\Users\me\my_project\app.py", line 9, in <module>
    from my_project.services.data_analysis import analyze
ModuleNotFoundError: No module named 'my_project.services.data_analysis'

I would think it has to do with relative imports or something, only its just one of the files that is having the issue, not several/all of the files. Any ideas on why I'm getting this error?

EDIT: modified project structure.

EDIT 2: this is unique as when running app.py, it still allows for things such as from.my_project.begin import start or from my_project.model_creation import create , but no relative or non-relative import will work for just the data_analysis.py module.

Answer 1

add __init__.py files to your directories and subdirectories. It tells python to treat directories as modules.

example:

• my_project
   - app.py
   • my_project
      • services
         - __init__.py
         - begin.py
         - data_analysis.py
         - model_creation.py
         - output.py

In app.py:

from my_project.services.data_analysis import analyze 

I'm under the impression that services is a directory inside the second my_project folder. if it's not, then you would import like so from services.data_analysis import analyze

Answer 2

For whatever reason, it just wasn't working for that one specific module. I ended up copying the file and deleting the original, and now it works fine. Not sure why or how, but it works now.