Use "python3 -m venv" You can activate two different environments in two different terminals. Why wouldn't you be able to? You can automatically activate venv

Use "python3 -m venv" You can activate two different environments in two different terminals. Why wouldn't you be able to? You can automatically activate venvs when you cd into a directory with virtualenvwrapper. Rule of thumb: if a thread goes into C it's releasing the GIL. Not always, but often. Like reading a file, or a library like like numpy or Pillow.