documentclass[14pt]{extreport}
usepackage{lipsum}
usepackage{listings}
lstset{
  basicstyle=footnotesize,
  breakatwhitespace=false,
  breaklines=true,
  captionpos=b,
  frame=single,
  extendedchars=true,
  language=Python,
  numbers=left,
  numbersep=5pt,
  showspaces=false,
  showstringspaces=false,
  showtabs=false,
  stepnumber=1,
  tabsize=2,
  title=lstname,
  belowskip=-1em,
  aboveskip=1em,
  belowcaptionskip=0em,
  }
begin{document}
lipsum[2-4]
begin{lstlisting}
dummy
dummy
dummy
dummy
end{lstlisting}
end{document}