python3 (1a) Complete the examples in the docstring and then write the body of t

def diff_first_last(arr): if arr[0] == arr[ len(arr) - 1 ]: return False return True

ID: 3724719 • Letter: P

Question

python3

(1a) Complete the examples in the docstring and then write the body of the following function: def diff_first_last(L):

'’' (list) -> boolean Precondition: len(L) >= 2

Returns True if the first item of the list is different from the last; else returns False.

>>> diff_first_last([3, 4, 2, 8, 3])

False

>>> diff_first_last(['apple', 'banana', 'pear'])

>>> diff_first_last([4.0, 4.5])

?? '''

(1b) Add two more examples/test cases to the docstring of diff_first_last and indicate why they are useful test cases.

def diff_first_last(arr):

if arr[0] == arr[ len(arr) - 1 ]:

return False

return True

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