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Andy McDonaldPython Development Techdegree Graduate 13,801 Points
Is a variable with a single letter Truthy?
Still having trouble with this quiz question. My for loop seems to be going but not adding to newword after it becomes what I think is truthy.
backwards = [ 'tac', 'esuoheerT', 'htenneK', [5, 4, 3, 2, 1], ] def reverse(arg): letlist =  for char in arg: letlist.append(char) newword = None count = len(letlist) for i in range(count - 1, -1, -1): print('i =' + str(i)) if newword: newword + letlist[i] else: newword = letlist[i] return newword print(reverse('words'))
A letter is truthy.
newword + letlist[i] does not change the value of
newword. You could try
newword += letlist[i].
With that change, your program would correctly reverse string inputs such as
'tac'. However, if you pass in
[5, 4, 3, 2, 1], you will instead get 15, which is the sum of the array, and if you pass in
['t', 'a', 'c'], you will get
'cat' rather than
['c', 'a', 't'].