A function that checks if the list is sorted

[DeaD_EyE]

from itertools import tee


def last_current(iterable):
    """
    Takes any kind of iterable and
    returns a interator which yields
    last and current element
    """
    last, current = tee(iterable)
    next(current)
    return zip(last, current)
    

def is_sorted(sequence):
    """
    Consumes any kind of sequences, also
    Generators, which can be consumed only one time
    and do not have index access.
    """
    for last, current in last_current(sequence):
        if last > current:
            return False
    return True