A Python virtual environment is a self-contained directory that allows you to install packages and dependencies for a specific project without affecting the global Python installation. It helps to manage project-specific libraries and ensures that projects remain isolated from each other, preventing version conflicts.
Virtual environments are created using the `venv` or `virtualenv` modules and are essential for maintaining clean and efficient development practices.
# To create a virtual environment
python -m venv myenv
# To activate the virtual environment (Windows)
myenv\Scripts\activate
# To activate the virtual environment (Linux/Mac)
source myenv/bin/activate
# To install packages (while in the activated virtual environment)
pip install package_name
# To deactivate the virtual environment
deactivate
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