\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{mdesai96} \pdfinfo{ /Title (numpy-cheat-sheet.pdf) /Creator (Cheatography) /Author (mdesai96) /Subject (NumPy 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}{7BA370} \definecolor{LightBackground}{HTML}{F6F9F6} \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{NumPy Cheat Sheet}}}} \\ \normalsize{by \textcolor{DarkBackground}{mdesai96} via \textcolor{DarkBackground}{\uline{cheatography.com/95163/cs/20869/}}} \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}mdesai96 \\ \uline{cheatography.com/mdesai96} \\ \end{tabulary} \vfill \columnbreak \begin{tabulary}{5.8cm}{L} \SetRowColor{FootBackground} \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}} \\ \vspace{-2pt}Published 23rd October, 2019.\\ Updated 23rd October, 2019.\\ 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{tabularx}{17.67cm}{x{8.635 cm} x{8.635 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{NumPy array basics}} \tn % Row 0 \SetRowColor{LightBackground} `np.array({[}1,2,3{]})` & Creates a 1D array with values 1, 2, 3. (shape 1x3) \tn % Row Count 3 (+ 3) % Row 1 \SetRowColor{white} `np.array({[}(1,2,3), (4,5,6){]})` & Creates 2D array of shape 2x3 with values 1,2,3,4,5,6 \tn % Row Count 6 (+ 3) % Row 2 \SetRowColor{LightBackground} `np.array({[}{[}(1,2,3), (4,5,6){]}, {[}(7,8,9), (10,11,12){]}{]})` & Creates a 3D array with shape 2x2x3 \tn % Row Count 9 (+ 3) % Row 3 \SetRowColor{white} `np.zeros(3,4)` & Creates a 3x4 array of zeros \tn % Row Count 11 (+ 2) % Row 4 \SetRowColor{LightBackground} `np.arrange(1,60,5)` & Creates a 1D array of values 1 through 60 at steps of 5 \tn % Row Count 14 (+ 3) % Row 5 \SetRowColor{white} `a.reshape(2,3,4)` & Reshapes array `a` into an array of shape 2x3x4 \tn % Row Count 17 (+ 3) % Row 6 \SetRowColor{LightBackground} `a.shape` & To get the shape of the array `a` \tn % Row Count 19 (+ 2) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{17.67cm}{x{3.454 cm} x{13.816 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Subsetting}} \tn % Row 0 \SetRowColor{LightBackground} `a{[}0{]}` & Gets the 0th element in 1D array `a` \tn % Row Count 2 (+ 2) % Row 1 \SetRowColor{white} `b{[}0,0{]}` & Gets the 0th element in 2D array `b` \tn % Row Count 4 (+ 2) % Row 2 \SetRowColor{LightBackground} `c{[}0,0,0{]}` & Gets the 0th element in 3D array `c` \tn % Row Count 6 (+ 2) % Row 3 \SetRowColor{white} `c{[}9,0,0{]}` & Gets the element which is the 0th element in the 0th row in the 9th depth \tn % Row Count 9 (+ 3) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{17.67cm}{x{3.9721 cm} x{13.2979 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Slicing arrays}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{2}{x{17.67cm}}{1D arrays} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} `a{[}:{]}` & Selects everything \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} `a{[}2:5{]}` & Selects the 2nd through the 4th rows (does not include the 5th row) \tn % Row Count 5 (+ 3) % Row 3 \SetRowColor{white} \mymulticolumn{2}{x{17.67cm}}{2D arrays} \tn % Row Count 6 (+ 1) % Row 4 \SetRowColor{LightBackground} `b{[}:,:{]}` & Selects all rows and all columns \tn % Row Count 8 (+ 2) % Row 5 \SetRowColor{white} `b{[}:,0{]}` & Selects all rows, and the zeroth column \tn % Row Count 10 (+ 2) % Row 6 \SetRowColor{LightBackground} `b{[}0,:{]}` & Selects the zeroth row, and all columns in that row \tn % Row Count 12 (+ 2) % Row 7 \SetRowColor{white} `b{[}0:2,:{]}` & Selects the zeroth and first row, but NOT the second. It includes all the columns in that row \tn % Row Count 16 (+ 4) % Row 8 \SetRowColor{LightBackground} `b{[}0:2,0:2{]}` & Selects the zeroth and first row, and the zeroth and first column \tn % Row Count 19 (+ 3) % Row 9 \SetRowColor{white} \mymulticolumn{2}{x{17.67cm}}{3D arrays} \tn % Row Count 20 (+ 1) % Row 10 \SetRowColor{LightBackground} `c{[}:,:,:{]}` & Selects all rows and columns on all depths \tn % Row Count 22 (+ 2) % Row 11 \SetRowColor{white} `c{[}0,:,:{]}` & Selects the everything in the first depth \tn % Row Count 24 (+ 2) % Row 12 \SetRowColor{LightBackground} `c{[}:,0,:{]}` & Selects the first row of each depth \tn % Row Count 26 (+ 2) % Row 13 \SetRowColor{white} `c{[}:,:,0{]}` & Selects the first column of each depth \tn % Row Count 28 (+ 2) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \end{document}