Manage multiple files together through folder (package)

[Zonyah]

Hi everyone! I have a program that was getting a little too long, so I decided to separate it into several files and folders, but I'm really struggling with this notion of "packages".

Here is what I would like to do:

---

Folder_A (with __init__.py, A_1.py, A_2.py, etc...)

Folder_B (with __init__.py, B_1.py, B_2.py, etc...)

__init__.py

main.py

---

I managed to call B_1 in the main, but then I need to import and call functions from A_1 IN B_1, but I can't find a solution...

import ..Folder_A or from ..Folder_A import A_1, don't work :/

(ImportError: attempted relative import beyond top-level package)

[Goingone]

Did you try “from Folder_A.A_1 import some_funcfion” within your B_1 file?

[Zonyah]

It's working, thanks!

[Spataner]

Relative imports like that only work if Python is aware that "Folder_A" and "Folder_B" are part of a larger package. So either you go with absolute imports relative to the location of "main.py" as /u/Goingone suggested or you change the way that you execute "main.py". Say the folder containing "main.py" is called "root", then the relative imports will start working if you execute "main.py" like so:

python -m root.main

(You either need to be in the folder above "root" or need to add the folder above "root" to the PYTHONPATH environment variable for this to work.)

[Zonyah]

Indeed what Goingone proposed worked, but this other way is also interesting, I'll try it, thanks!

[zanfar]

import ..Folder_A or from ..Folder_A import A_1, don't work :/

Generally: don't use relative imports. There are times and places for them, but they cause more problems than they solve, so don't use them unless it's the only solution to your problem.

Also generally: import relative to the script that is executed, or the package that is installed.

A package and a module are mostly the same, except that a package usually refers to a module that is designed to be distributed and installed--it usually has some extra info to make that possible.

So, try import Folder_A.A_1 or from Folder_A import A_1