is .env a good choice for venv ?

i'm following NLP course with this config https://huggingface.co/learn/nlp-course/fr/chapter0/1?fw=pt#utilisation-dun-environnement-virtuel-python but something bug me : 

Sometimes in a project, we need a .env file for soring API KEYS for example, ENV variables. Using a .env folder for the venv virtuelenv seems to make some conflicts, i think. Shouldn't we use .venv instead ? 