Now that we have the proper tools installed, we're ready to create our first Flask app. To begin, create a directory somewhere convenient that will hold all of your Python projects. At the command prompt or terminal, navigate to your projects directory; mine is
~/projects for short on Unix-based systems.
$ mkdir ~/projects $ cd ~/projects
Now we will create a
virtualenv. The commands below will create a new directory named
hello_flask inside your projects folder that contains a complete, isolated Python environment.
$ virtualenv hello_flask New python executable in hello_flask/bin/python2. Also creating executable in hello_flask/bin/python Installing setuptools............done. Installing ...