def calcular(pauli):
   cant1=-1
   cant2=-1
   elem1=0
   for i in range(len(pauli)):
    elem2=pauli[i]
    for j in range(len(pauli)):
      if elem2==pauli[j]:
            cant2=cant2+1
      if cant1<cant2:
       cant1=cant2
       elem1=elem2
   return elem1


pauli = [6, 6, 6, 7, 5, 9]
n = calcular(pauli)