% http://tex.stackexchange.com/q/299534/
\documentclass{article}
\usepackage{pythontex}
\usepackage[use-files]{xsim}

\begin{document}

\section{Test}

\begin{exercise}[subtitle = Codeless Question,points=10]
  A question without code, worth 10 points. Subtitle and point values are in
  correct place.
\end{exercise}
\begin{solution}
  Solution 1
\end{solution}

\begin{exercise}[subtitle = Codeful Question,points=15]
Now with PythonTeX:
\begin{pyblock}
print("hello, world!")
sum = 0
for j in range(0,100):
    sum += j
print(sum)
\end{pyblock}
\end{exercise}
\begin{solution}
  Solution 2
\end{solution}

\end{document}