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\PYG{g+gp}{\PYGZgt{}\PYGZgt{}\PYGZgt{} }\PYG{n}{test\PYGZus{}seq}\PYG{o}{=}\PYG{n}{Seq}\PYG{p}{(}\PYG{l+s+s2}{\PYGZdq{}TACACTGCATTACAACCCAAGCATTA\PYGZdq{}}\PYG{p}{)}
\PYG{g+gp}{\PYGZgt{}\PYGZgt{}\PYGZgt{} }\PYG{n+nb}{len}\PYG{p}{(}\PYG{n}{test\PYGZus{}seq}\PYG{p}{)}
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