Python - funcion cambiar palabras

def pal (op):

    i=0

    j=0

    while i<len(op):

        if op[i]!=' ':

             i=i+1

        else:

            texto=op[j:i]

            texto=texto[::-1]

            print (texto, '')

            return (texto)

            i=i+1

            j=i

        if i>len(op):

            i=0

            break

#-*- coding: utf -8 -*-

def pal (op):

   texto=op.split()

   for x in texto:

      if len(op) != 0 :

         print(x[::-1]," ",end="")

pal("hola caracola")

texto = 'Aqui viene tu texto'

invierteTexto = texto [::-1]

print(invierteTexto)

>>> phrase = 'hola caracola'

>>> ' '.join(word[::-1] for word in phrase.split())

'aloh alocarac'

>>> ' '.join(phrase[::-1].split()[::-1])

'aloh alocarac'

>>>