Python - Verificar si la longitud de todas las palabras es igual a 8

variable1="la casa azul"

variable2="12345678 12345678 12345678"

def comprobar(cadena):

    result=list(filter(lambda x: len(x)==8, cadena.split()))

    if len(result)==len(cadena.split()):

        return True

    return False

print(comprobar(variable1))

print(comprobar(variable2))

variable1="la casa azul"

variable2="12345678 12345678 12345678"

def comprobar(cadena):

  return all(len(x)==8 for x in cadena.split())

print(comprobar(variable1))

print(comprobar(variable2))