Technical note on \endinput removing trailing space might be wrong?

[user202729]

The part that "\endinput ends the content before the final space" may be a documentation error.

I believe that \endinput by itself does not remove the trailing space by itself, rather it's a side effect of the fact that TeX ignores spaces after control sequences.

E.g. in the following code

\documentclass{article}
\usepackage{pythontex}
\begin{document}
\begin{pycode}
def f():
	print(r"1\empty")
\end{pycode}
123\pyc{f()}456
\end{document}

The space is not visible. While in the following code

\documentclass{article}
\usepackage{pythontex}
\begin{document}
\begin{pycode}
def f():
	print(r"1\endinput 77")
\end{pycode}
123\pyc{f()}456
\end{document}

The space is visible.

As such, I think it would be better to simply remove the suggestion of using \endinput to remove the trailing space. Using % suffices. (or even \empty / \relax but this one would be confusing)