a good python ambient for my latex code

Question

I am looking for a latex preamble in order to have a good python script. Here I found this

\documentclass[a4paper,12pt]{article}
\usepackage[utf8]{inputenc}
% Default fixed font does not support bold face
\DeclareFixedFont{\ttb}{T1}{txtt}{bx}{n}{12} % for bold
\DeclareFixedFont{\ttm}{T1}{txtt}{m}{n}{12}  % for normal
% Custom colors
\usepackage{color}
\definecolor{deepblue}{rgb}{0,0,0.5}
\definecolor{deepred}{rgb}{0.6,0,0}
\definecolor{deepgreen}{rgb}{0,0.5,0}
\usepackage{listings}
% Python style for highlighting
\newcommand\pythonstyle{\lstset{
language=Python,
basicstyle=\ttm,
morekeywords={self},              % Add keywords here
keywordstyle=\ttb\color{deepblue},
emph={MyClass,init},          % Custom highlighting
emphstyle=\ttb\color{deepred},    % Custom highlighting style
stringstyle=\color{deepgreen},
frame=tb,                         % Any extra options here
showstringspaces=false
}}
% Python environment

which looks great but I find noway to apply it into my latex code, phereaps I'm lost into the complexity of it and what I am looking for is just a sample code such as

\begin{document}
here some python codes
\begin{listings}
    \pythonstyle 
import numpy as np
class init(self, a, b):
    self.a = a
    self.b = b
\end{listings}
\end{document}

or the like, in order to have a proper python ambient. Could you help me, please?

I tried one of that codes. The compiler says: "you must invoke latex with the shell escape flag..." Still issues — Stefano Fedele, Sep 06 '22 at 19:11
I'm sorry, I still do not understand. Why and how should I do that? — Stefano Fedele, Sep 06 '22 at 19:24
@StefanoFedele it depends on how you are compiling your document. I use arara like this: arara: pdflatex: {options: -shell-escape} when I need to shell escape. Minted and other packages/programmes (like makeindex I believe) require -shell-escape to run. Look at arara or latexmk depending upon what you like, the documentation explains it better then I. — JamesT, Sep 06 '22 at 19:29
@StefanoFedele I quite enjoy it, it's a latex package of sorts so should come with a full installation (it did on my windows TeX live anyway). If you look at my question here you can see how it is called. It's literally just at the beginning of your .tex file, latexmk is a good alternative but I prefer arara. Hope this helps! — JamesT, Sep 06 '22 at 19:52
For list the python code but also run it if you want, you may find of interest this answer. — Fran, Sep 07 '22 at 11:06

score 3 · Answer 1 · edited Sep 07 '22 at 10:35

You're doing two things wrong:

the code environment of the listings package is not called listing, but lstlisting
the \pythonstyle macro should go before the code environment

So if you do

\pythonstyle 
\begin{lstlisting}
import numpy as np
class __init__(self, a, b):
    self.a = a
    self.b = b
\end{lstlisting}

it will work.

I do think it's a bit odd to define a macro like that, instead of for example defining a new listings style with \lstdefinestyle. See example below.

\documentclass[a4paper,12pt]{article}
\usepackage[utf8]{inputenc}
% Default fixed font does not support bold face
\DeclareFixedFont{\ttb}{T1}{txtt}{bx}{n}{12} % for bold
\DeclareFixedFont{\ttm}{T1}{txtt}{m}{n}{12}  % for normal
% Custom colors
\usepackage{color}
\definecolor{deepblue}{rgb}{0,0,0.5}
\definecolor{deepred}{rgb}{0.6,0,0}
\definecolor{deepgreen}{rgb}{0,0.5,0}
\usepackage{listings}
% Python style for highlighting
\newcommand\pythonstyle{\lstset{
language=Python,
literate={-}{-}1 {}{}1,% {xxx}{\textrm{   }}1, 
basicstyle=\ttm,
morekeywords={self},              % Add keywords here
keywordstyle=\ttb\color{deepblue},
emph={MyClass,init},          % Custom highlighting
emphstyle=\ttb\color{deepred},    % Custom highlighting style
stringstyle=\color{deepgreen},
frame=tb,                         % Any extra options here
showstringspaces=false
}}
\lstdefinestyle{pythonstyling}{
language=Python,
basicstyle=\ttm,
morekeywords={self},              % Add keywords here
keywordstyle=\ttb\color{deepblue},
emph={MyClass,init},          % Custom highlighting
emphstyle=\ttb\color{deepred},    % Custom highlighting style
stringstyle=\color{deepgreen},
frame=tb,                         % Any extra options here
showstringspaces=false
}
% Python 
\begin{document}
here some python codes
\begin{lstlisting}[style=pythonstyling]
import numpy as np
class init(self, a, b):
    self.a = a
    self.b = b
\end{lstlisting}
\pythonstyle 
\begin{lstlisting}
import numpy as np
class init(self, a, b):
    self.a = a
    self.b = b
\end{lstlisting}
\end{document}

That looks good, but if you want a pdf with a python code ready to be copied and pasted, than you need to make him understand that a python indentation is present. I tried with that "{xxx}{\textrm{ }}1", but it does not work. Would you suggest anything? — Stefano Fedele, Sep 07 '22 at 09:32
@StefanoFedele If you set showstringspaces=true that should indicate spaces, but perhaps not what you want? — Torbjørn T., Sep 08 '22 at 10:09

a good python ambient for my latex code

1 Answers1