It says that the except is an invalid syntax for this code: import pdb

def func$1($a$,$ b$)$:

return $($a $+$ b$)/($a $-$ b$)$

def func$2($size$)$:

digits $=$ np$.$random.randint$(0,9,$ size$=$size$)$

for i in range$($digits$.$size $-1)$:

a $=$ int$($digits$[$i$])$

b $=$ int$($digits$[$i $+1])$

try:

ans $=$ func$1($a$,$ b$)$

except ZeroDivisionError:

pdb$.$set$\_$trace$()$

break

func$2(1000)$