isVirtual is a tool to detect if the current directory is linked to a virtual environment, get the config of this env and more. Work with venv, virtualenv, pipenv, poetry, hatch, pdm and uv.

Install

pip install isvirtual

Usage

This lib can be used within a python script or as a command line.

Python

Simple check:

from isvirtual import is_virtual

if __name__ == "__main__":
    if is_virtual() is True:
        print("You are within a virtual environment which can either be venv, virtualenv or conda.")
    else:
        print("You are not in a virtual env")

You can also check if you are specifically in a venv, virtualenv or conda environment:

from isvirtual import is_venv, is_virtualenv, is_conda

if __name__ == "__main__":
    if is_venv() is True:
        print("You are in a venv")
    elif is_virtualenv() is True:
        print("You are in a virtualenv")
    elif is_conda() is True:
        print("You are in a conda env")
    else:
        print("You are not in a any type of virtual env")

You can also get the info from the env coming from pyvenv.cfg or load equivalent data from conda config. The sys.prefix data is added to the original config file under the key prefix:

from isvirtual import get_config

if __name__ == "__main__":
    data = get_config()
    print(data["home"])

Result:

home = /path/to/venv/python/bin
include-system-site-packages = false
version = 3.10.14
prefix = /path/to/venv/dir
prompt = nameOfYourProject

Note that virtual environment created with virtualenv have more keys and the key prompt is not present by default in venv created environments.

You can also check if the terminal from which the script has been launched is in a virtual env:

if running_from_activated_env() is True:
    print("The script is running from a terminal with an activated virtual env")

Note that this function check the existence of VIRTUAL_ENV. It is set by the activate script, but a virtual env can be used without activation by directly running an executable from the virtual env's bin/ (or Scripts on Windows) directory, in which case VIRTUAL_ENV will not be set. Or a non-virtual env Python binary can be executed directly while a virtual env is activated in the shell, in which case VIRTUAL_ENV may be set in a Python process that is not actually running in that virtual env.

Source

You can find if a given directory is attached to a virtual env:

from isvirtual import check_dir

if __name__ == "__main__":
    if check_dir("/some/dir/path") is True:
        print("Virtual environment found")
    else:
        print("404 Not Found")

You can recursively scan a directory to get all virtual environments in it:

from isvirtual import scan_dir

if __name__ == "__main__":
    scanned = scan_dir("/some/dir/path")
    if len(scanned) > 0:
        print(f"Found {len(scanned)} virtual env(s)")
    else:
        print("No virtual env found")

CLI

$ isvirtual --help
Usage: isvirtual [OPTIONS] COMMAND [ARGS]...

╭─ Options ──────────────────────────────────────────────────────────────────────────────╮
│ --help          Show this message and exit.                                            │
╰────────────────────────────────────────────────────────────────────────────────────────╯
╭─ Commands ─────────────────────────────────────────────────────────────────────────────╮
│ check   Check if you are currently in a virtual env                                    │
│ info    If the given directory is linked to a virtual env, show its info               │
│ scan    Scan the given directory recursively to find all virtual environment in it     │
╰────────────────────────────────────────────────────────────────────────────────────────╯

Check if a virtual env is currently activated (support conda):

$ isvirtual check
Yes

Show info of current directory's virtual env info:

$ isviritual info .
home=/usr/local/opt/[email protected]/bin
include-system-site-packages=false
version=3.10.14
path=/Users/MyUserName/MyDir/.venv
source=venv

Also display with the source key if the virtual env has been created through venv, virtualenv, poetry and pipenv.

License

This project is licensed under the terms of the MIT license.