python venv cheat sheet
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venv is a module in python that provides support for creating lightweight, isolated python environments. these environments are useful for managing dependencies and avoiding conflicts between different projects. this cheat sheet will guide you through the basics of using venv with code examples.
to create a virtual environment, open your terminal and navigate to the project directory. run the following command:
this command creates a virtual environment named venv in the current directory.
activate the virtual environment based on your operating system:
you'll see the virtual environment name in your terminal prompt, indicating that the virtual environment is active.
to deactivate the virtual environment and return to the global python environment, simply run:
with the virtual environment activated, you can install python packages using pip. for example:
to freeze the current environment's dependencies into a requirements.txt file, use:
to install dependencies from a requirements.txt file in a different environment, run:
to see a list of installed packages in your virtual environment, use:
you can create a virtual environment with a specific python version:
replace 3.8 with your desired python version.
to delete a virtual environment, simply delete the corresponding directory. be cautious to avoid accidental deletion.
using venv is an essential practice for managing python project dependencies. this cheat sheet covers the basic commands to create, activate, and manage virtual environments, making it easier for you to work on different projects with distinct dependencies.
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