confusion on importing modules

[snippsat]

Can also advice to make a virtual environment(build into Python) then search path to folder will work.
Example setup.

myproject/
│
├── Browser/                 
│   ├── __init__.py                # Makes Browser a Python package
│   │
│   ├── src/                      
│   │   ├── __init__.py           
│   │   └── URL.py               
│   │
│   └── test/                      
│       ├── __init__.py          
│       └── test_URL.py           
│
└── other_project_files/           # Other project files (if any)

Start like this:

# Make
G:\env
λ python -m venv myproject

G:\env
λ cd myproject\

# In Linux source bin/activate
G:\env\myproject
λ G:\env\myproject\Scripts\activate

# Now working see (myproject) 
G:\env\myproject
(myproject) λ 

# Eg make folder folders/files from command line or use OS file explorer 
G:\env\myproject
(myproject) λ mkdir Browser

G:\env\myproject\Browser
(myproject) λ touch __init__.py
....

Test run.

G:\env\myproject\Browser\test                                                           
(myproject) λ rich test_URL.py                                                                                       
# Advice use pytest instead 
import unittest                                                                         
import Browser.src.URL                                                                  
                                                                                        
class test_URL(unittest.TestCase):                                                      
    def test_init(self):                                                                
        test_URL = "https://python-forum.io"                                            
        self.assertEqual(test_URL, Browser.src.URL.web_url())                           
                                                                                        
if __name__ == '__main__':                                                              
    unittest.main()                                                                     
                                                                                        
G:\env\myproject\Browser\test                                                           
(myproject) λ python test_URL.py                                                        
.                                                                                       
----------------------------------------------------------------------                  
Ran 1 test in 0.000s                                                                    
                                                                                        
OK                                                                                      
                                                                                        
G:\env\myproject\Browser\test                                                           
(myproject) λ