So this is my code conf$\_$matrix $=$ np$.$zeros$((10,10),$ dtype$=$int$)$

for i in range$($len$($test$\_$labels$))$:

true$\_$label$=$test$\_$labels$[$i$]$

predicted$\_$label $=$ NN$\_$classifier$($test$\_$data$[$i$,$ :$])$

conf$\_$matrix$[$trye$\_$label,predicted$\_$labe$]+=1$

print$($conf$\_$matrix$)$ and my TA wants me to update matrix inside of the loop and i dont know how to do that