That to me means that is is installed under python 3.5 and ready to be used.
lib/python3.5/site-packages (from pyinstaller) Requirement already satisfied: setuptools in. Requirement already satisfied: pyinstaller in. If I run again the same command I’m getting: I installed pyinstaller under python3.5 with this command: python3.5 -m pip install pyinstaller I have 2 python versions installed under my mac osx sierra:
