% make chapters beginning on even pages
\makeatletter
\renewcommand*\cleardoublepage{\clearpage\if@twoside
  \ifodd\c@page \hbox{}\newpage\if@twocolumn\hbox{}%
  \newpage\fi\fi\fi}
\makeatother



\usepackage[utf8]{inputenc}
%\usepackage{psfig}%%%%% for including eps figures 
\usepackage[font=small,format=plain,labelfont=bf,up,textfont=it,up]{caption}
\usepackage{ifthen}
\usepackage{fancyvrb}
\usepackage{color}
\usepackage{ulem}
\usepackage{listings}
\usepackage{amssymb}
\usepackage{booktabs}
\usepackage{wrapfig}
\usepackage{url}
\usepackage{courier}

\usepackage{tikz}
\usetikzlibrary{arrows,positioning,shadows,shapes,calc,backgrounds,fit}

\newboolean{final}
\newboolean{preview}
\newboolean{showcomments}

\setboolean{final}{true}

\setboolean{preview}{true}
\setboolean{showcomments}{true}

\ifthenelse{\boolean{final}}
  {\setboolean{preview}{false}
   \setboolean{showcomments}{false}
  }
  {}
                   

\ifthenelse{\boolean{showcomments}}
  {\newcommand{\nb}[2]{
    \fbox{\bfseries\sffamily\scriptsize#1}
    {\sf\small$\blacktriangleright$\textit{#2}$\blacktriangleleft$}
   }
   \newcommand{\version}{\emph{\scriptsize$-$Id: main.tex 19055 2008-06-05 11:20:31Z cfbolz $-$}}

   \newcommand\needreview{\textcolor{red}{XXX review}\ }
  }
  {\newcommand{\nb}[2]{}
   \newcommand{\version}{}
   \newcommand\needreview{}
  }

\newcommand\davide[1]{\nb{DAV}{#1}}
\newcommand\anto[1]{\nb{ANTO}{#1}}
\newcommand{\commentout}[1]{}

\newcommand{\hfigrule}{\rule{\linewidth}{0.03em}}


\normalem

\let\oldcite=\cite

\renewcommand\cite[1]{\ifthenelse{\equal{#1}{XXX}}{[citation~needed]}{\oldcite{#1}}}

\lstset{language=Python,
        basicstyle=\ttfamily\footnotesize,
        keywordstyle=\bfseries,
        frame=tb,
        stringstyle=\color{blue},
        fancyvrb=true,
        xleftmargin=10pt,xrightmargin=10pt,
        showstringspaces=false
}