(http://1.bp.blogspot.com/-gygBhJxbkNo/VnF3mRGBcgI/AAAAAAAAANY/OfyJwzOzOXs/s1600/TutoIntroduccionalaProgramacionconPython.png)
(http://4.bp.blogspot.com/-wHl7x6m1r5k/VcVDF6ptyhI/AAAAAAAAAKE/zDHvA1GAkzE/s200/mega5.png) (https://mega.nz/#F!6k8RSCwS!_zcVyHPnI5A0_urwbCH7OA)
Fuente: todo-sobre-programacion.blogspot