Packages and Modules in Python not working

Question

Why this architecture is not working?

 /test
     __init__.py
     app.py
     models.py 
     /subpackage
         __init__.py
         subpackage.py

Here's the example code:

app.py

from test.subpackage import hi_from_subpackage    

hi_from_subpackage()

subpackage/subpackage.py

from test.models import models

def hi_from_subpackage():
    print('Hi')

# I nee models here too
models()

the error is:

Traceback (most recent call last):
  File "app.py", line 1, in <module>
    from test.subpackage import hi_from_subpackage
**ModuleNotFoundError: No module named 'test.subpackage'**

What i'm doing wrong?

- Thanks in advance

Answer 1

You are getting confused with the import system of python, it happens. When you import subpackage, you want to import a module subpackage from a package subpackage so it should look like this:

from subpackage.subpackage import hi_from_subpackage    

and when you are lower in the package hierarchy, you don't need to say witch package the module come from, it already "knows" it as it is in a higher hierarchy.

from models import models

Think about it like if you were writing core. Here models is in the scope of subpackage in a global variable way. And when you are standing in test package, you need to refer to a lower lever package by its name, as you do with a variable.

Answer 2

Try running pip install test from your cmd if is Windows. With regard to the IDE you are using I would recommend vs-code to you.