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+Add some appendixes:
+
 A. Tipos de datos extra: OrderedDict, NamedTuple...
 B. Módulos y entornos virtuales: Pipenv
 C. Librerías comunes
@@ -10,3 +12,6 @@ E. Testing
 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