What are the differences between venv and virtualenv in Python?

What are the differences between venv and virtualenv in Python?

Both venv and virtualenv are tools for creating isolated Python environments, but there are some key differences. venv is included in the Python standard library starting from Python 3.3, while virtualenv is a third-party package that works with both Python 2 and 3. Additionally, virtualenv offers more features, such as the ability to create environments with different Python versions.

Which one should I use for my new project?

If you're using Python 3.3 or later, venv is a great choice due to its simplicity and being part of the standard library. However, if you need features like support for multiple Python versions or are working with Python 2, then virtualenv would be more suitable.

Can I use both in the same project?

It's not recommended to use both in the same project as they can lead to confusion and conflicts. It's best to stick with one tool for managing your virtual environments.

Are there any performance differences between them?

In general, there are no significant performance differences between venv and virtualenv. The choice between them usually comes down to features and compatibility rather than performance.