Add some appendixes:

A. Tipos de datos extra: OrderedDict, NamedTuple...
B. Módulos y entornos virtuales: Pipenv
C. Librerías comunes
D. GUI
    - TKinter -> comes from TCL's GUI ToolKit
    - Qt is also possible with PyQt
    - https://github.com/PySimpleGUI/PySimpleGUI
E. Testing
    - https://docs.python.org/3/library/unittest.html
F. Depuración
    - https://docs.python.org/3.8/library/pdb.html
G. Editores, IDEs etc.


Add exercises with the answers at the end of the book