如何在virtualenv`deactivate`上运行清理脚本？

Question

Via autoenv , whenever I cd into a directory with a .env file, I automatically activate my python virtual environment and set some environment variables. This .env file by essence is a setup script.

# /absolute/path/to/project/.env
source /absolute/path/to/project/.venv/bin/activate

export ENV_VAR_1="foo"
export ENV_VAR_2="bar"

But when I'm done working on my project and I type deactivate

• I expect these environment variables to vanish.
• In reality , these environment variables persist.

Is there a clean way for me to run a teardown script when I call deactivate that does some project clean up when I'm done for the day?

Answer 1

Inside the activate script, there is a deactivate block in which you can unset the variables:

deactivate () {
    # ...
    unset ENV_VAR_1
    unset ENV_VAR_2
}