\begin{Verbatim}[commandchars=\\\{\}]
\PYG{g+gp}{\PYGZgt{}\PYGZgt{}\PYGZgt{} }\PYG{n}{mean} \PYG{o}{=} \PYG{n}{pssm}\PYG{o}{.}\PYG{n}{mean}\PYG{p}{(}\PYG{n}{background}\PYG{p}{)}
\PYG{g+gp}{\PYGZgt{}\PYGZgt{}\PYGZgt{} }\PYG{n}{std} \PYG{o}{=} \PYG{n}{pssm}\PYG{o}{.}\PYG{n}{std}\PYG{p}{(}\PYG{n}{background}\PYG{p}{)}
\PYG{g+gp}{\PYGZgt{}\PYGZgt{}\PYGZgt{} }\PYG{k}{print}\PYG{p}{(}\PYG{l+s+s2}{\PYGZdq{}mean = }\PYG{l+s+si}{\PYGZpc{}0.2f}\PYG{l+s+s2}{, standard deviation = }\PYG{l+s+si}{\PYGZpc{}0.2f}\PYG{l+s+s2}{\PYGZdq{}} \PYG{o}{\PYGZpc{}} \PYG{p}{(}\PYG{n}{mean}\PYG{p}{,} \PYG{n}{std}\PYG{p}{))}
\PYG{g+go}{mean = 3.21, standard deviation = 2.59}
\end{Verbatim}
