\begin{Verbatim}[commandchars=\\\{\}]
\PYG{k+kn}{from} \PYG{n+nn}{Bio} \PYG{k+kn}{import} \PYG{n}{SeqIO}

\PYG{n}{orchid\PYGZus{}dict} \PYG{o}{=} \PYG{n}{SeqIO}\PYG{o}{.}\PYG{n}{to\PYGZus{}dict}\PYG{p}{(}
    \PYG{n}{SeqIO}\PYG{o}{.}\PYG{n}{parse}\PYG{p}{(}\PYG{l+s+s2}{\PYGZdq{}ls\PYGZus{}orchid.fasta\PYGZdq{}}\PYG{p}{,} \PYG{l+s+s2}{\PYGZdq{}fasta\PYGZdq{}}\PYG{p}{),} \PYG{n}{key\PYGZus{}function}\PYG{o}{=}\PYG{n}{get\PYGZus{}accession}
\PYG{p}{)}
\PYG{n+nb}{print}\PYG{p}{(}\PYG{n}{orchid\PYGZus{}dict}\PYG{o}{.}\PYG{n}{keys}\PYG{p}{())}
\end{Verbatim}
