\begin{Verbatim}[commandchars=\\\{\}]
\PYG{g+gp}{\PYGZgt{}\PYGZgt{}\PYGZgt{} }\PYG{k+kn}{import} \PYG{n+nn}{numpy}
\PYG{g+gp}{\PYGZgt{}\PYGZgt{}\PYGZgt{} }\PYG{n}{x} \PYG{o}{=} \PYG{n}{Array}\PYG{p}{(}\PYG{l+s+s2}{\PYGZdq{}ACGT\PYGZdq{}}\PYG{p}{)}
\PYG{g+gp}{\PYGZgt{}\PYGZgt{}\PYGZgt{} }\PYG{n}{x}\PYG{p}{[}\PYG{l+s+s1}{\PYGZsq{}C\PYGZsq{}}\PYG{p}{]} \PYG{o}{=} \PYG{l+m+mi}{5}
\end{Verbatim}
