How to fix this error:

$```$

NameError Traceback $($most recent call last$)$

Cell In$[18],$ line $24$

$22$

$23$ train$\_$df$.$head$()$

$--->24$ def accuracy$($y$\_$true,y$\_$pred,normalize$=$TRUE$)$:

$25$ accuracy$=[]$

$26$ for i in range$($len$($y$\_$pred$))$:

NameError: name 'TRUE' is not defined

$```$