Minted package clash with `easylist` with `#` as list keyword

Question

Here's an example:

\documentclass{article}

\usepackage[sharp]{easylist} % use # symbol to denote a list
\usepackage{minted}

\begin{document}

\begin{easylist}[enumerate]
# Profile Python
\begin{minted}{python}
import math
\end{minted}
\end{easylist}

\end{document}

To make it work, I could just use other symbols like \usepackage[at]{easylist} instead of sharp. But I am curious because error message cannn't really tell me why is this not working. Do someone know the why I cannot use #?

The error message is:

_./main.out.pyg:2:
Use of \FV@PYG doesn't match its definition.
\PYG #1#2->\FV@PYG {
                #1}{\FancyVerbBreakStart #2\FancyVerbBreakStop }
l.2 \PYG{k+kn}{import} \PYG{n+nn}{math}

---

Update:

Please see @egreg's answer below (and comments!) for an explanation.

A solution to the above question using \Activate and \Deactivate command provided by easylist.:

\documentclass{article}

\usepackage[sharp]{easylist} % use # symbol to denote a list
\usepackage[cache=false]{minted}
\title{useless}
\begin{document}

\begin{easylist}[enumerate]
# Deactivate it first,
\Deactivate
\begin{minted}{python}
import math
\end{minted}
\Activate
# then activate it again.
# Good!
\end{easylist}

\end{document}

Answer 1

The sharp option makes # into an active character. The files that are produced by pygmentize contain macro definitions which in turn use # and, because of being inside easylist, this character is no longer the parameter specifier.

Thus all the auxiliary macros with argument that minted needs to use don't work as expected.

Using other characters can lead to other problems; I tried the at option and @ won't work in minted. For example

\documentclass{article}

\usepackage[at]{easylist} % use # symbol to denote a list
\usepackage{minted}

\begin{document}

\begin{easylist}[enumerate]
@ Profile Python
\begin{minted}{python}
    @classmethod
\end{minted}
\end{easylist}

\end{document}

will not print @.

Besides, minted will not respect the current indentation in the list.

Here's a comparison:

\documentclass{article}

\usepackage{easylist}
\usepackage{minted}

\begin{document}

\begin{enumerate}
\item Profile Python
\begin{minted}{python}
# This program prints Hello, world!
print('Hello, world!')
\end{minted}
\begin{enumerate}
\item Indented
\begin{minted}{python}
# This program prints Hello, world!
print('Hello, world!')
\end{minted}
\end{enumerate}
\end{enumerate}

\begin{easylist}[enumerate]
§ Profile Python
\begin{minted}{python}
# This program prints Hello, world!
print('Hello, world!')
\end{minted}
§§ Indented
\begin{minted}{python}
# This program prints Hello, world!
print('Hello, world!')
\end{minted}
\end{easylist}

\end{document}