This code will switch the index position of two items with each other. Same code can be used in same way for more than 2 items, so far even number of items need swapping 

def SwapItemPos(MyUpList,Item1,Item2):

  X,Y = MyUpList.index(Item1),MyUpList.index(Item2)

  MyUpList[Y],MyUpList[X] = MyUpList[X], MyUpList[Y]

  print MyUpList

MyList = [‘One’, ‘Two’, ‘Three’, ‘Four’, ‘Five’]

Item1 = MyList[2]

Item2 = MyList[3]

SwapItemPos(MyList,Item1,Item2)

 

Output:

>>> [‘One’, ‘Two’, ‘Four’, ‘Three’, ‘Five’]