使用 listings 包突出显示数字

Question 1

很明显，listings除非你愿意投入大量时间，否则你无法单独使用来完成此操作。外部工具总是有帮助的。如果你坚持不使用minted，我想你仍然可以从中受益Pygments。例如，你可以使用以下 Python 脚本处理 Python 代码，该脚本尝试分别对数字和函数名称应用不同的样式。

from pygments.lexers.python import Python3Lexer
from pygments import highlight, lex
from pygments.token import *

py_str = r'''
def myfun(a11, a12):
    return a11-a12+15+0.35
print("h3ll0 w0rld")
'''

lex_result = list(lex(py_str, Python3Lexer()))

def listing_escape(s):
    return '%*{}*)'.format(s)

def number_style(s):
    return listing_escape('\\StyleNumber{%s}'%s)

def function_name_style(s):
    return listing_escape('\\StyleFuncName{%s}'%s)

result = ''
for item in lex_result:
    if is_token_subtype(item[0], Number):
        result += number_style(item[1])
    elif is_token_subtype(item[0], Name.Function):
        result += function_name_style(item[1])
    else:
        result += item[1]

print(result)

上面脚本的输出是：

def %*\StyleFuncName{myfun}*)(a11, a12):
    return a11-a12+%*\StyleNumber{15}*)+%*\StyleNumber{0.35}*)
print("h3ll0 w0rld")

现在，您需要修改 LaTeX 源代码。基本上，您需要定义escapeinside和设置数字和函数名称的函数样式。

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{listings}
\usepackage{xcolor}


\definecolor{purpy}{rgb}{0.769,0.02,0.894} % Custom highlighting colors
\definecolor{bluepy}{rgb}{0.082,0.02,1}
\definecolor{brownpy}{rgb}{0.557,0.388,0.184}
\definecolor{greenpy}{rgb}{0.118,0.553,0.388}
\definecolor{strpy}{rgb}{0.796,0.102,0.118}
\definecolor{commentpy}{rgb}{0.024,0.514,0.078}
\definecolor{Background}{rgb}{0.9,0.95,0.95}

\DeclareFixedFont{\ttm}{T1}{txtt}{m}{n}{10} % It will be the basic font style

\usepackage{listings} 
\lstdefinestyle{mypy}{ %My Python style definition (based on Google Colaboratory)
    language=Python,
    escapeinside={\%*}{*)},
    numbers=left, 
    numberstyle=\footnotesize, 
    numbersep=1em, 
    xleftmargin=1em, 
    framextopmargin=2em, 
    framexbottommargin=2em, 
    showspaces=false, 
    showtabs=false, 
    showstringspaces=false, 
    columns=flexible,
    keepspaces=true,
    tabsize=4,
    basicstyle=\ttm,
    backgroundcolor=\color{Background},
    keywords={as,assert,async,await,break,continue,del,elif,else,except,finally,for,from,if,import,pass,raise,return,try,while,with,yield}, 
    keywordstyle={\ttm\color{purpy}},
    keywords={[2]@invariant,False,None,True,and,class,def,global,in,is,lambda,nonlocal,not,or}, 
    keywordstyle={[2]\ttm\color{bluepy}},
    keywords={[3]@invariant,abs,all,any,ascii,bin,bool,bytearray,bytes,callable,chr,classmethod,compile,complex,delattr,dict,dir,divmod,enumerate,eval,exec,filter,float,format,frozenset,getattr,globals,hasattr,hash,help,hex,id,input,int,isinstance,issubclass,iter,len,list,locals,map,max,memoryview,min,next,object,oct,open,ord,pow,print,property,range,repr,reversed,roundset,setattr,slice,sorted,@staticmethod,str,sum,super,tuple,type,vars,zip, myfun}, % myfun should be brown in its definition
    keywordstyle={[3]\ttm\color{brownpy}},   
    stringstyle=\color{strpy}, 
    commentstyle=\color{commentpy},
}

% Displaying minus symbol properly
\makeatletter
\lst@CCPutMacro
\lst@ProcessOther{"2D}{\lst@ttfamily{-{}}{-}}
\@empty\z@\@empty
\makeatother

% Desired environment definition
\lstnewenvironment{python}[1][]{ 
\lstset{style=mypy, frame=l, numbers=none}
}{}

% number style
\newcommand{\StyleNumber}[1]{\color{cyan}\detokenize{#1}}
% function name style
\newcommand{\StyleFuncName}[1]{\color{orange}\detokenize{#1}}

\begin{document}

\begin{python}  
def %*\StyleFuncName{myfun}*)(a11, a12):
    return a11-a12+%*\StyleNumber{15}*)+%*\StyleNumber{0.35}*)
print("h3ll0 w0rld")
\end{python}  

\end{document}

这将为你带来：

这仍然是一个基于列表的解决方案，无需铸造和外壳逃脱邪恶，耶！

Answer