I can't make the function completely correct

Question

Hi I am really confused in this one, it is very hard for me to make the part \'we\'re done\'. Only when I run the code, the result would only be [\'Hooray\', \' Finally\']

Answer 1

This line:

string+char

is computing something, but not assigning it.

Try this instead:

string=string+char

Or, you can shorten it to use += shorthand:

string += char

Which is equivilent to the above.