Question

list =[('1', '5'), ('3', '5'), ('4', '5'), ('5', '1'), ('5', '3'), ('5', '4')]

above is a generated list now i want to write only (5,1) for (1,5) and (5,1) too same with the other values.

Desired output

list = [('5', '1'), ('5', '3'), ('5', '4')]

Answer 1

Add the item to the new list if its reverse is not also in the list, or the item is larger than its reverse.

newlist = []
for item in oldlist:
    rev = item[::-1]
    if (not (rev in oldlist)) or (item > rev)
        newlist.append(item)