excepciones y raise

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
"""
Python 3.10.5 (tags/v3.10.5:f377153, Jun  6 2022, 16:14:13) [MSC v.1929 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> # excepciones: son un modelo de manejo de errores
>>> 25/0
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ZeroDivisionError: division by zero
>>> 25 + "er"
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for +: 'int' and 'str'
>>> int("er")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: invalid literal for int() with base 10: 'er'
>>> lista = [1,2]
>>> lista[2]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
IndexError: list index out of range
>>> dicc = {"red":"rojo", "blue":"azul"}
>>> dicc["yellow"]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
KeyError: 'yellow'
>>>

# Script que pide dos numeros y devuelve su cociente

a = float(input("Dividendo: "))
b = float(input("Divisor: "))

try:
    print(f"{a}/{b} = {a/b}")
except ZeroDivisionError:
    print("No se puede dividir por cero")
else:
    print("Que suerte, no hubo errores")
finally:
    print("Adios") # esto se ejecuta siempre

try:
    n = 2 / int("0")
except ValueError:
    print("Error de valor: debe ingresar un numero")
except ZeroDivisionError:
    print("Error de division por cero")
else:
    print(n)

# otro enfoque
try:
    n = 2 / int("sdfdsf")
except (ValueError, ZeroDivisionError):
    print("Error de valor o de division por cero")
else:
    print(n)
"""

def sumar(a,b):
    """Función que recibe como argumentos dos numeros y devuelve su suma"""
    if not isinstance(a,(int,float)) or not isinstance(b,(int,float)):
        raise TypeError("Se requieren dos números")
    return a + b


print(sumar(1,2))
print(sumar("Ale","jandro"))
print(sumar([1,2,3],["hola","chau"]))