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Greg Maddox
1,471 Pointsi can't seem to understand this problem. i get the right answer when i do it in the work station. is it .append()
When i .join() the 2 in the workspace i get the right string, but in this module it says sequence error, looking for str and got list.
def first_4(iterable):
first_four = iterable [:4]
return first_four
def first_and_last_4(iterable):
first_last_4 = ''
stuff = ''
first_last_4.append(iterable [:4])
first_last_4.append(iterable [-4:])
return stuff.join(first_last_4)
Greg Maddox
1,471 Pointsi've tried several variations in the python shell, and they all work. They still won't work in the module though. In fact, in the next video he ends with a solution to the problem, i went back and that doesn't even work.
first_last_4 [:] = [''.join(first_last_4[:])]
not sure what the issue is.
Martin Heinvee
872 PointsI tried your code and at first it gave an error if I used 'jupiter&mars' as input. I modified it and got it working for strings. However I understand the challenge so that it also has to take list as input for example [1,2,3,4,5,6,7,8,9]. I understand that for that we should have '12346789'. Anyway, in case of string input:
def first_4(iterable): first_four = iterable [:4] return first_four
def first_and_last_4(iterable): first_last_4 = [] stuff = [] first_last_4.append(iterable[:4]) stuff.append(iterable[-4:]) return (''.join(first_last_4))+(''.join(stuff))
1 Answer
Martin Heinvee
872 PointsHi, I got the correct answer and passed. It turned out that the only input can be string not the list also as I understood. My working solution is the following:
def first_and_last_4(item2): return item2[0:4:1]+item2[-4::1]
Martin Heinvee
872 PointsMartin Heinvee
872 PointsHi, I have the same problem, getting the right answers but no pass. I posted my solution also.