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

\PYG{n}{count} \PYG{o}{=} \PYG{l+m+mi}{0}
\PYG{k}{for} \PYG{n}{rec} \PYG{o+ow}{in} \PYG{n}{SeqIO}\PYG{o}{.}\PYG{n}{parse}\PYG{p}{(}\PYG{l+s+s2}{\PYGZdq{}SRR020192.fastq\PYGZdq{}}\PYG{p}{,} \PYG{l+s+s2}{\PYGZdq{}fastq\PYGZdq{}}\PYG{p}{):}
    \PYG{n}{count} \PYG{o}{+=} \PYG{l+m+mi}{1}
\PYG{k}{print}\PYG{p}{(}\PYG{l+s+s2}{\PYGZdq{}}\PYG{l+s+si}{\PYGZpc{}i}\PYG{l+s+s2}{ reads\PYGZdq{}} \PYG{o}{\PYGZpc{}} \PYG{n}{count}\PYG{p}{)}
\end{Verbatim}
