# Create a virtual environment
python -m venv venv  # Windows
python3 -m venv venv  # MacOS/Linux

# Activate the virtual environment
venv\Scripts\activate  # Windows
source venv/bin/activate  # MacOS/Linux

# Install required packages
pip install kivy

# Create requirements.txt file
pip freeze > requirements.txt

# Run a test script
python test.py

--------------------------
in case of an POLICY error -- 
PS D:\Coding Stuff, Editing\Visual Studio Python Codings\MyProjects\BurgerBillingSystem> .\burger-billing-system-env\Scripts\activate     
.\burger-billing-system-env\Scripts\activate : File D:\Coding Stuff, Editing\Visual Studio Python 
Codings\MyProjects\BurgerBillingSystem\burger-billing-system-env\Scripts\Activate.ps1 cannot be loaded because running scripts is disabled on this system.     
For more information, see about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=135170.
At line:1 char:1
+ .\burger-billing-system-env\Scripts\activate
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : SecurityError: (:) [], PSSecurityException
    + FullyQualifiedErrorId : UnauthorizedAccess

The error message you are encountering indicates that running scripts is disabled on your systems PowerShell execution policy. This is a security measure to prevent malicious scripts from running.

Here is how to fix this and activate your virtual environment:

Change the Execution Policy (For Administrators Only):

Open PowerShell as Administrator. "Right-click on the PowerShell" icon and select "Run as administrator".

Type the following command and press Enter:
"PowerShell Set-ExecutionPolicy RemoteSigned -Scope CurrentUser"

Activate the Virtual Environment (After Policy Change):
Navigate to your project directory using the cd command in PowerShell.
Run the activation command again:

---------------------------------
For Anaconda Jupyter Notebook -
pip install venv
python -m venv env_test
.\env_test\Scripts\activate
pip install ipykernel
python -m ipykernel install --user --name kernel_ai_cnn_1