def is_sorted(check):
    ascending = True
    descending = True
    previous = check[0]
    for item in check[1:]:
        if ascending and item < previous:
            ascending = False
        if descending and item > previous:
            descending = False
        if not ascending and not descending:
            return False
        previous = item
    return True
 
def test(check):
    whether = is_sorted(check)
    print(whether, check)
 
test([1, 2, 3, 4])
test([1, 1, 1, 1])
test([9, 8, 7, 6])
test([1, 2, 3, 2])

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