$1$ def swap$\_$ends $($message: $str$ :

"nhreturn a new string that is nessage with the first and last characters swapped

Precondition: Ien$($message$)$ ba $2.$

$)$ shap$\_$ends $(\text{'}$cat$")$

'tac'

$$ swap$\_$ends $(\text{'}$breakfast for dinner!$\text{'})$

'Ireakfast for$-$ dinnerb'

n$*$w

message $=[1$ast$\_$char $+$ middie $+$ first$\_$char$]$

return last$\_$char $+$ middle $+$ finst$\_$char