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\begin{document}

\begin{lstlisting}[style=stylepython]
#convertir un triplet rgb en une chaîne héxadecimale
def rgb2hex(red, green, blue):
    return '#%02x%02x%02x' % (red, green, blue)
    
ma_couleur=rgb2hex(255,18,0)
\end{lstlisting}

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