Create Virtual Environment using venv in Python
Introduction
A virtual environment is an isolated Python environment that allows you to install and run specific versions of Python and packages without affecting the system-wide Python installation. It helps in managing dependencies and isolating different projects, ensuring that each project has its own set of dependencies.Advantages of Virtual Environments
- Isolate project dependencies
- Prevent version conflicts
- Ensure reproducibility
- Simplify dependency management
Creating a Virtual Environment
Python 3.3 and above include the venv module, which allows you to create a virtual environment. python3 -m venv <env_name>
where "<env_name>" is the name you want to give to your virtual environment. Upon creation, a virtual environment folder is created with a "bin" directory containing Python and other scripts. Activating a Virtual Environment
To use the virtual environment, you must activate it. source <env_name>/bin/activate
You can verify the activation by checking the terminal prompt, which should now display the name of the virtual environment. Deactivating a Virtual Environment
To exit the virtual environment and return to the system-wide Python installation, type: deactivate
Installing Packages in a Virtual Environment
To install packages within the virtual environment, you can use pip as usual: pip install <package_name>
This will install the package only within the active virtual environment. 
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