T$($t$)=2031$e$0\mathrm{.}4$t

$($a$)$ In Python, define the function T$($t$).$ Create an array t of $101$ equally$-$spaced t$-$values between $0$ and $50,$ including $0$ and $50.$ Create the corresponding array Tvals, where Tvals$[$i$]=$T$($t$[$i$]).$ What is the value of Tvals$[12]?$

$($b$)$ Use Euler's method with step size h $=0\mathrm{.}5$ to approximate the value of T$(6).$