\begin{Verbatim}[commandchars=\\\{\}]
\PYG{k+kn}{from} \PYG{n+nn}{Bio.Alphabet} \PYG{k+kn}{import} \PYG{n}{IUPAC}
\PYG{k+kn}{from} \PYG{n+nn}{Bio.SubsMat} \PYG{k+kn}{import} \PYG{n}{FreqTable}

\PYG{n}{e\PYGZus{}freq\PYGZus{}table} \PYG{o}{=} \PYG{n}{FreqTable}\PYG{o}{.}\PYG{n}{FreqTable}\PYG{p}{(}\PYG{n}{expect\PYGZus{}freq}\PYG{p}{,} \PYG{n}{FreqTable}\PYG{o}{.}\PYG{n}{FREQ}\PYG{p}{,} \PYG{n}{IUPAC}\PYG{o}{.}\PYG{n}{unambiguous\PYGZus{}dna}\PYG{p}{)}
\end{Verbatim}
