what venv is

Have you ever wondered what venv is and why is it used… well check this if you don’t wanna sink into an ocean of documentation….. what is venv? venv is a standard library module that creates a virtual environment which is directory(Bookish definition).

module vs directory? module is like a file which contains the codes you write in a editor and virtual environment is a directory which is like a folder that usually contains modules for better understanding and readability of a project.

when virtual environment is created it contains:

1. isolated Python interpreter(usually copied from the base python)
2. site-packages directory for dependencies
3. all the other metadata. It does not include any source code or other things besides the project itself.

why venv is used? (important question) and what are the proble arises without it.

Problems 1: Different projects need different dependencies often different version of same library. So when you install the library globally it might effect the other projects to break.(often people faces)

Problem 2: Without virtual environment project may unintentionally rely on globally installed python packages .Which can lead to “works on my machine not on your machine” problems and makes it makes it hard for the others to work on that project and makes debbuging nightmare.

Solution:

1. Virtual environments solve this by isolating dependencies per project, ensuring reproducibility, stability, and safe package management.
2. Some packages that you installed globally might be available on the other persons device so when he tries to work on the same project it might not open or might cause many errors such unresolved reference which is common problem arises in development.

That is why venv is used….. if you want to know more checkout this: https://docs.python.org/3/library/venv.html#creating-virtual-environments or chat with gpt (:>)