%% Copyright 2021-2026 Tobias Enderle
%%
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%% The latest version of this license is in
%%   http://www.latex-project.org/lppl.txt
%% and version 1.3c or later is part of all distributions of LaTeX
%% version 2005/12/01 or later.

% DESCRIPTION
% Demonstrates the use of different Python sessions in a document

\documentclass{article}

\usepackage{pyluatex}

\pysession{session-a}
\pyc{greeting = "Hi, I'm session A"}
\pyc{var = 'Only available in session A'}

\pysession{session-b}
\pyc{greeting = "Hi, I'm session B"}

\begin{document}

In this document, the use of sessions is demonstrated.
Sessions provide a way to structure and separate code.
Variables, function definitions, etc. of one session are only accessible
by that session.
This can be helpful if you have long documents with a lot of code.

\paragraph{Session A}
\pysession{session-a}
The content of the variable \texttt{greeting} in session A is:\\
\py{greeting}

\paragraph{Session B}
\pysession{session-b}
The content of the variable \texttt{greeting} in session B is:\\
\py{greeting}

The variable \texttt{var} is only defined in session A, therefore
an error is printed here:
\begin{python}
try:
  print(var)
except NameError as e:
  print(e)
\end{python}

\end{document}
