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- #!/usr/bin/env python
- # -*- coding: utf-8 -*-
- def ingresar(n):
- while True:
- try:
- numero = float(input(f"Ingrese el número {n}: "))
- except ValueError:
- print("Error, ingrese un número")
- else:
- return numero
- def saludar(nombre="desconocido"):
- print(f"Hola {nombre}")
- if __name__ == '__main__':
- a = ingresar("a")
- print(f"El doble de {a} es {2*a}")
- saludar()
- saludar("Ana")
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