Determine if a list is in descending order

Question

I am trying to write a function that will test whether or not a list is in decending order. This is what I have so far, but it doesn\'t seem to be working for all lists. <

Answer 1

Instead of using indices, you can iterate over the input:

def ordertest(iterable):
    it = iter(iterable)
    prev = next(it)
    for e in it:
        if e > prev:
            return False
        prev = e
    return True

Note that it's a bad idea to return the strings 'true' and 'false'. Instead, you can use Python's built-in booleans.