macOS/LinuxWindows: $ mkdir myproject $ cd myproject $ python3 -m venv venv
Activate the environment: macOS/LinuxWindows: $ . venv/bin/activate
Install Flask: $ pip install Flask
macOS/LinuxWindows: $ mkdir myproject $ cd myproject $ python3 -m venv venv
Activate the environment: macOS/LinuxWindows: $ . venv/bin/activate
Install Flask: $ pip install Flask