text: from fractions import Fraction
  from algebreb.util.numeros import fraccion_aleatoria
  
  frac1 = fraccion_aleatoria(-4, 3)
  print(frac1)
  
  excepcion = Fraction(1, 2)
  frac2 = fraccion_aleatoria(1, 2, excepcion)
  print(frac2)