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Python Python Collections (2016, retired 2019) Slices Slice Functions

Posted by ajithadapa
ajithadapa
2,023 Points

Is anything wrong with reverse_evens ?

Is there any wrong with reverse_evens function

slices.py 
def first_4(shopping_list):
    return shopping_list[:4]

def first_and_last_4(p_list):
    return p_list[:4] + p_list[-4:]

def odds(q_list):
    return q_list[1::2]

def reverse_evens(r_list):
    return r_list[::-2]

1 Answer

james south
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points
james south
.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points

if it is supposed to return the even indices in reverse order, yes. it begins at the last element in the list, so if that list has an even number of elements, due to the zero-indexed nature of python lists, the last element will have an odd index. then as you move to the beginning of the list by twos, the returned elements will be the negative indices. find an adjustment that only returns the even indices.