\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{dogwith4shoes}
\pdfinfo{
  /Title (regular-expressions.pdf)
  /Creator (Cheatography)
  /Author (dogwith4shoes)
  /Subject (Regular Expressions Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{0ECF0E}
\definecolor{LightBackground}{HTML}{EFFCEF}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Regular Expressions Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{dogwith4shoes} via \textcolor{DarkBackground}{\uline{cheatography.com/130921/cs/26354/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}dogwith4shoes \\
  \uline{cheatography.com/dogwith4shoes} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 15th November, 2021.\\
   Updated 8th February, 2021.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{x{1.29402 cm} x{3.68298 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Syntax}}  \tn
% Row 0
\SetRowColor{LightBackground}
. & Wildcard \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\textasciicircum{} & Start of a string \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\$ & End of a string \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
x* & 0+ repetitions of x \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
x+ & 1+ repetitions of x \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
x? & 0-1 repetitions of x \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
x\{m\} & m repetitions of x \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
x\{m,n\} & m-n repetitions of x, greedy \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
x\{m,n\}? & m-n repetitions of x, non-greedy \tn 
% Row Count 10 (+ 2)
% Row 9
\SetRowColor{white}
x|y & x OR y \tn 
% Row Count 11 (+ 1)
% Row 10
\SetRowColor{LightBackground}
{[}\textasciicircum{}x{]} & NOT x \tn 
% Row Count 12 (+ 1)
% Row 11
\SetRowColor{white}
\textbackslash{}a & Literal 'a' \tn 
% Row Count 13 (+ 1)
% Row 12
\SetRowColor{LightBackground}
x*\{int\} & 'x*' must be int long \tn 
% Row Count 14 (+ 1)
% Row 13
\SetRowColor{white}
\textless{} x \textgreater{} \textless{} y \textgreater{} & Collocations of x and y \tn 
% Row Count 16 (+ 2)
% Row 14
\SetRowColor{LightBackground}
\textless{}x\textgreater{} (\textless{}y\textgreater{}) & Only returns y \tn 
% Row Count 17 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{1.09494 cm} x{3.88206 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Whitespace characters}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textbackslash{}n & newline \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\textbackslash{}s & space \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\textbackslash{}t & tab \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\textbackslash{}e & escape \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\textbackslash{}r & return \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.09494 cm} x{3.88206 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Functions}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{search()} & Somewhere in string \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\seqsplit{findall()} & Somewhere in the string, non-overlapping \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
match() & Beginning of string \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
\seqsplit{fullmatch()} & Entire string \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{Arguments: pattern, string, \textless{}flag=0\textgreater{}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4977 cm} x{4.4793 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Special escape characters}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textbackslash{}A & IS at start of string \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\textbackslash{}b & IS at wordbreak \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\textbackslash{}B & NOT at wordbreak \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\textbackslash{}d & IS {[}0-9{]} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\textbackslash{}D & NOT {[}0-9{]} \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
\textbackslash{}s & White space characters \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\textbackslash{}S & NOT white space characters \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
\textbackslash{}w & IS Unicode word character {[}a-ZA-Z0-9\_{]} \tn 
% Row Count 9 (+ 2)
% Row 8
\SetRowColor{LightBackground}
\textbackslash{}W & NOT Unicode word character \tn 
% Row Count 10 (+ 1)
% Row 9
\SetRowColor{white}
\textbackslash{}Z & IS at end of string \tn 
% Row Count 11 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.59264 cm} x{3.38436 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{.format}}  \tn
% Row 0
\SetRowColor{LightBackground}
'\{:n\}'.format(x) & Prints x, padded with n whitespace \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\{:\textless{}n\} & Left justified \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\{:\textgreater{}n\} & Right justified \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
\{:.nf\} & Show n decimal places \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{'\{:\{width\}\}'.format('x', width=n)} \tn 
% Row Count 6 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4577 cm} x{2.79197 cm} x{1.32733 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Hierarchy}}  \tn
% Row 0
\SetRowColor{LightBackground}
1 & Parenthesis & ( ) \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
2 & Counters & * + ? \{ \} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
3 & Sequences and anchors & \textasciicircum{} \$ \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
4 & Disjunction & | \tn 
% Row Count 4 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4577 cm} x{1.41887 cm} x{2.70043 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Flags}}  \tn
% Row 0
\SetRowColor{LightBackground}
re.I & \seqsplit{re.IGNORECASE} &  \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
re.M & \seqsplit{re.MULTILINE} & \textasciicircum{} \$ match line boundaries \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
re.X & re.VERBOSE & Ignores whitespace \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}