Python: determining whether any item in sequence is equal to any other

Question

I\'d like to compare multiple objects and return True only if all objects are not equal among themselves. I tried using the code below, but it doesn\'t work. If

Answer 1

If the objects are all hashable, then you can see whether a frozenset of the sequence of objects has the same length as the sequence itself:

def all_different(objs):
    return len(frozenset(objs)) == len(objs)

Example:

>>> all_different([3, 4, 5])
True
>>> all_different([3, 4, 5, 3])
False