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$-17$

FAILURE, predicted answer was $1,$ computed answer was $-17.$

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answer.py

plus and minus.txt

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Variables from cisc$108$ import assert$\_$equal

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from cisc$108$ import assert$\_$equal

def convert$\_$operator$($ch$)$:

if $ch==\text{'}+\text{'}$:

return $1$

elif $ch==\text{'}-\text{'}$:

return $-1$

else:

return $0$

$f=$ open $(\text{'}$plus and minus.txt$\text{'})$

data $=f*read()$

total $=0$

for $s$ in data:

total $+=$ convert$\_$operator$($s$)$

print$($total$)$

f$.$ close $()$

assert$\_$equal$($total$,($convert$\_$o$.$perator$($s$)))$

$18$

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