---
title: "Code in LaTex"
date: 2020-04-30T23:46:05-04:00
draft: false
tags: ["LaTex"]
---
I am currently working on a paper in LaTex and wanted to include some source code in it. I didn't want to use the default `verbatim` environment since I wanted to include syntax highlighting as well. Luckily, the `listings` package is an easy and extensible way to include source code inside LaTex documents. To speak first of its extensibility, here is a subset of the arguments that it can possibly take:
| Argument | Description |
| ----------------- | ------------------------------------------------------------ |
| aboveskip | Amount of space to include above code. |
| backgroundcolor | Background color |
| basicstyle | Font-style of code (Color & Size) |
| belowskip | Amount of space to include below code. |
| breakatwhitespace | Only break at whitespace (boolean) |
| breaklines | Automatic Line Breaking (boolean) |
| commentstyle | Font-style of comments (Color & Size) |
| frame | Type of frame: `l` for left, `r` for right, `t` for top, `b` for bottom; can use combination of letters or `single`. |
| keywordstyle | Font-style of keywords (Color & Size) |
| language | Language of code (for highlighting purposes) |
| numbers | Where to put the numbers: `none`, `left`, or `right`. |
| numbersep | How far the line-numbers are from the code. |
| numberstyle | Font-style of numbers (Color & Size) |
| stringstyle | Font-style of strings in code (Color & Size) |
| tabsize | Default tab size in terms of spaces. |
| title | Show filename included in `\lstinputlistings` or caption. |
Here is an example of code that I used in a paper
```latex
\usepackage{color}
\usepackage{listings}
\definecolor{keyblue}{rgb}{0.1, 0.1, 0.6}
\definecolor{dkgreen}{rgb}{0,0.6,0}
\definecolor{gray}{rgb}{0.5,0.5,0.5}
\definecolor{stringcol}{rgb}{0.58,0.4,0.1}
\lstset{frame=l,
language=Python,
aboveskip=3mm,
belowskip=3mm,
columns=flexible,
basicstyle={\small\ttfamily},
numbers=left,
numberstyle=\tiny\color{gray},
numbersep=2mm,
keywordstyle=\color{keyblue},
commentstyle=\color{dkgreen},
stringstyle=\color{stringcol},
breaklines=true,
tabsize=4
}
\begin{lstlisting}
def greeting():
return "Hello!"
# Printing the greeting to the screen
print(greeting())
\end{lstlisting}
```
