[Tex/LaTex] get a shadowbox with rounded corners? (using `listings` package)

Question

I'm using the listings package as below:

\usepackage{listings}

\lstnewenvironment{pythoncode}[1][]
{\lstset{language=Python,
    basicstyle=\ttfamily\footnotesize,
    frame=shadowbox,
    frameround=tttt,
    rulecolor=\color{black},
    rulesepcolor=\color{gray},
    #1}
}{}

I wanted to get a rounded corners together with a drop-shadow (shadowbox). Is it possible? While the frame border itself had rounded corners, the shadow had square corners, which is kinda ugly.

Answer 1

Next code uses tcolorbox to format the shadowed box where code is inserted through listing package. Size, color and format of shadows can be adapted to ones taste.

\documentclass{article}

\usepackage[most]{tcolorbox}

\newtcblisting{pythoncode}[2][]{%
    enhanced, title=#2, colframe=blue!50!black, 
    colback=blue!10!white, 
    fonttitle=\ttfamily, coltitle=white,
    attach boxed title to top left = {xshift=5mm,yshift=-2mm} ,
    boxed title style={size=small, colback=blue!75!black},
    width=.5\linewidth,
    listing only,listing options={language=Python, basicstyle=\ttfamily\footnotesize},#1}

\begin{document}

\begin{pythoncode}[drop shadow]{hello.py}
#!/usr/bin/env python
def main():
    print "Hello, World!"
if __name__ == '__main__':
    main()
\end{pythoncode}

\begin{pythoncode}[drop fuzzy shadow]{hello.py}
#!/usr/bin/env python
def main():
    print "Hello, World!"
if __name__ == '__main__':
    main()
\end{pythoncode}

\begin{pythoncode}[drop lifted shadow]{hello.py}
#!/usr/bin/env python
def main():
    print "Hello, World!"
if __name__ == '__main__':
    main()
\end{pythoncode}
\end{document}