No module found when I run a main.py

[Gribouillis]

There are different ways to solve this problem. The first thing to understand is that there are two related but distinct hierarchies that must not be mixed up:

• The file system tree of files and directories.
  
• The tree of Python packages and modules.
  

when you write from A.info import spam it is understood that we are speaking about the tree of Python packages, so A is a Python package and 'info' is a subpackage or a submodule. The import statement does not directly refer to the directories hierarchy.

A very flexible solution to your problem is to build a library containing the modules 'info' and 'country'. Let us call this library 'greatlib'. We are going to package it in a way that allows you to import it from any other program. For this, create a directory hierarchy like this one:

Output:
the_great_lib/
    greatlibsrc/
        __init__.py
        country.py
        info.py
    setup.py
    README.md

You can leave the file __init__.py empty but it must exist.

In the file README.md just add the line # Greatlib library for example.

In the file setup.py, create the following content:

from setuptools import setup, find_packages

setup(
    name='greatlib',
    version='0.1.0',
    packages=find_packages(include=['greatlibsrc', 'greatlibsrc.*'])
)

Once you are done, move to the directory the_great_lib in a terminal and type the command (don't forget -e and the dot)

Output:
python -m pip install -e .

That's it, now from any other program, you can use

from greatlib.info import Person