So, I have a python script I’d like to run from time to time from the CLI (on Linux) that resides inside a venv. What’s the recommended/intended way to do this?
Write a wrapper shell script and put it inside a $PATH-accessible directory that activates the virtual environment, runs the python script and deactivates the venv again? This seems a bit convoluted, but I can’t think of a better way.
Thanks, yes, I use nox and github actions for automated environments and testing in my own projects, and tox instead of nox when it’s someone else’s project. But for ad hoc, local and interactive multiple environments, I don’t.
thanks for the head up on nox. Syntax seems like a tox meets pytest.
Are you using github actions locally? Feel silly making gh actions and workflows and only github runs them
No, I don’t use GHA locally, but the actions are defined to run the same things that I do run locally (e.g. invoke
nox
). I try to keep the GHA-exclusive boilerplate to a minimum. Steps can be like:Sometimes if I want a higher level interface to tasks that run
nox
or other things locally, I usetaskipy
to define them in mypyproject.toml
, like:Thanks for the introduction to taskipy. Think if i need macros, Makefile is the way to go. Supports running targets in parallel and i like performing a check to ensure the virtual environment is activated or the command won’t run.
.ONESHELL: .DEFAULT_GOAL := help SHELL := /bin/bash APP_NAME := logging_strict #virtual environment. If 0 issue warning #Not activated:0 #activated: 1 ifeq ($(VIRTUAL_ENV),) $(warning virtualenv not activated) is_venv = else is_venv = 1 VENV_BIN := $(VIRTUAL_ENV)/bin VENV_BIN_PYTHON := python3 PY_X_Y := $(shell $(VENV_BIN_PYTHON) -c 'import platform; t_ver = platform.python_version_tuple(); print(".".join(t_ver[:2]));') endif .PHONY: mypy mypy: ## Static type checker (in strict mode) ifeq ($(is_venv),1) @$(VENV_BIN_PYTHON) -m mypy -p $(APP_NAME) endif
make mypy
without the virtualenv on will write a warning message why it’s not working!Sure, but nox is the closer counterpart for in-venv-task definitions. List “sessions” with
-l
, pick specific sessions to run with-s
.import nox from nox.sessions import Session nox.options.reuse_existing_virtualenvs = True APP_NAME = 'logging_strict' @nox.session(python='3.12') def mypy(session: Session): """Static type checker (in strict mode)""" session.install('-U', 'mypy', '.') session.run('mypy', '-p', APP_NAME, *session.posargs)
Unfortunately it doesn’t currently do any parallel runs, but if anyone wants to track/encourage/contribute in that regard, see nox#544.