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Python Python Collections (2016, retired 2019) Tuples Combo

Create a function named combo that takes two iterables.

I already passed the challenge so I started exploring. This code is a bit lengthier than necessary. I just wanted to see if I could do it with slices.

def combo(iter1, iter2):
    tup_list = [] 
    combo_list = [None] * (len(iter1)+len(iter2))
    combo_list[::2] = iter1
    combo_list[1::2] = iter2
    index1 = 0
    index2 =index1+1
    for item in combo_list:
            tup_list.append((combo_list[index1], combo_list[index2]))
            index1 +=2 
            index2 +=2
        except IndexError:

    return tup_list

Remarkably, this one also passed the challenge.

1 Answer

Steven Parker
Steven Parker
225,712 Points

:point_right: Most challenges will accept any method that produces the correct result.

Although they are certainly intended to give you opportunities to practice the techniques introduced in the videos just prior to the challenge.

But there are some exceptions, for example, until recently you could pass this particular challenge with this compact solution (but it is no longer accepted!): :smirk:

def combo(iter1, iter2):
    return list(zip(iter1, iter2))

Thanks Steve.