Python Virtualenv python 3 смотреть онлайн

Python Virtual Environments, often referred to as virtualenv, are a powerful tool for managing project dependencies and isolating them from the system-wide Python installation. This tutorial will walk you through the basics of creating and using virtual environments in Python 3, including setting up, activating, and deactivating them.
A virtual environment is a self-contained directory that contains a specific Python interpreter and a set of packages. It allows you to isolate your project's dependencies, making it easier to manage and share code without conflicting with other projects or the system-wide Python installation.
Before creating virtual environments, you need to ensure you have the virtualenv package installed. You can install it using pip, the Python package manager:
Now that you have virtualenv installed, let's create a virtual environment for your Python project. To create a virtual environment, open your terminal or command prompt and navigate to your project directory. Use the following command:
Replace venv with the name you want for your virtual environment. This command will create a directory with the specified name (e.g., venv) in your project folder.
Once the virtual environment is created, you can activate it to start using it. The activation process differs depending on your operating system:
On Windows:
On macOS and Linux:
After activation, your terminal prompt will change to indicate that you are now using the virtual environment. Any Python packages you install or scripts you run will be isolated within this