A LaTeX template for printing syntax-highlighted code nicely in grayscale

print_template.tex

\documentclass[11pt]{article}

\usepackage[letterpaper]{geometry}
\geometry{top=0.5in, bottom=0.5in, left=0.7in, right=0.7in}

\usepackage{courier}
\usepackage{listings}

\usepackage{fancyhdr}
\pagestyle{fancy}
\lhead{}
\chead{}
\rhead{\texttt{Lowman \thepage}}
\lfoot{}
\cfoot{}
\rfoot{}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}
\setlength\headsep{0in}
\setlength{\headheight}{0.5in}

\usepackage{color}

\definecolor{lightGray}{rgb}{0.5,0.5,0.5}
\definecolor{mediumGray}{rgb}{0.3,0.3,0.3}


\begin{document}
    \lstinputlisting[
        language=Python,
        basicstyle=\footnotesize\ttfamily,
        commentstyle=\color{lightGray},
        breaklines=true,
        numbers=left,
        numbersep=10pt,
        numberstyle=\footnotesize\ttfamily\color{mediumGray},
        showspaces=false,
        showstringspaces=false,
        stringstyle=\color{lightGray}
      ]{<%= filename %>}
\end{document}