\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{Mario (mariofreitas)} \pdfinfo{ /Title (python-basics-dictionaries-and-sets.pdf) /Creator (Cheatography) /Author (Mario (mariofreitas)) /Subject (Python Basics - Dictionaries and Sets 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}{105AA3} \definecolor{LightBackground}{HTML}{F0F4F9} \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{Python Basics - Dictionaries and Sets Cheat Sheet}}}} \\ \normalsize{by \textcolor{DarkBackground}{Mario (mariofreitas)} via \textcolor{DarkBackground}{\uline{cheatography.com/42813/cs/13219/}}} \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}Mario (mariofreitas) \\ \uline{cheatography.com/mariofreitas} \\ \uline{\seqsplit{github}.com/MarioRaul/} \end{tabulary} \vfill \columnbreak \begin{tabulary}{5.8cm}{L} \SetRowColor{FootBackground} \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}} \\ \vspace{-2pt}Not Yet Published.\\ Updated 21st October, 2017.\\ 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*}{2} \begin{tabularx}{8.4cm}{x{3.44 cm} x{4.56 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Dictionaries and Sets - Syntax}} \tn % Row 0 \SetRowColor{LightBackground} `d = \{'a': 1, 'b': 2, 'c': 3\}` & Dictionaries are defined with {\emph{\{key1: value1, key2: value2, ...\}}} \tn % Row Count 3 (+ 3) % Row 1 \SetRowColor{white} `d{[}'a'{]}` & Returns the value associated with {\emph{'a'}} (1) \tn % Row Count 5 (+ 2) % Row 2 \SetRowColor{LightBackground} `d{[}'a'{]} = 11` & Changes value associated with {\emph{'a'}} to {\emph{11}} \tn % Row Count 7 (+ 2) % Row 3 \SetRowColor{white} `d{[}'d'{]} = 4` & Adds {\emph{'d'}} key and associates it with {\emph{4}} value \tn % Row Count 10 (+ 3) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{8.4cm}{x{3.68 cm} x{4.32 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Dictionaries - Methods}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{2}{x{8.4cm}}{`d1 = \{'a': 1, 'b': 2, 'c': 3\}`\{\{nobreak\}\}} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{2}{x{8.4cm}}{`d2 = \{'d': 4, 'e': 5, 'f': 6\}`} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} `'a' in d1` & Returns {\emph{True}} if {\emph{'a'}} is in {\emph{d1}} and {\emph{False}} otherwise (True) \tn % Row Count 5 (+ 3) % Row 3 \SetRowColor{white} `d1.items()` & Returns a list of {\emph{(keys, values)}} in {\emph{d1}} (dict\_items({[}('a', 1), ('b', 2), ('c', 3){]})) \tn % Row Count 10 (+ 5) % Row 4 \SetRowColor{LightBackground} `d1.keys()` & Returns a list of keys in {\emph{d1}} (dict\_keys({[}'a', 'b', 'c'{]})) \tn % Row Count 13 (+ 3) % Row 5 \SetRowColor{white} `d1.values()` & Returns a list of values in {\emph{d1}} (dict\_values({[}1, 2, 3{]})) \tn % Row Count 16 (+ 3) % Row 6 \SetRowColor{LightBackground} `d1.update(d2)` & Updates the values of existing keys in {\emph{d1}} with their respective in {\emph{d2}} and adds {\emph{d2}} {\emph{keys}} and {\emph{values}} that are not on {\emph{d1}} \tn % Row Count 23 (+ 7) % Row 7 \SetRowColor{white} `d1.get('c')`\textasciicircum{}1\textasciicircum{} & Returns the value associated with {\emph{'c'}} and does nothing if {\emph{'c'}} is not on {\emph{d1}} (3) \tn % Row Count 28 (+ 5) % Row 8 \SetRowColor{LightBackground} \seqsplit{`d1.setdefault('3'}, 0)`\{\{nobreak\}\} & Do the same as {\emph{get()}}, but returns {\emph{0}} if {\emph{'3'}} is not on {\emph{d1}} (0) \tn % Row Count 32 (+ 4) \end{tabularx} \par\addvspace{1.3em} \vfill \columnbreak \begin{tabularx}{8.4cm}{x{3.68 cm} x{4.32 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Dictionaries - Methods (cont)}} \tn % Row 9 \SetRowColor{LightBackground} `d1.pop('c')` & Returns the value associated with {\emph{'c'}} and removes it from {\emph{d1}} (3) \tn % Row Count 4 (+ 4) % Row 10 \SetRowColor{white} `d1.popitem()` & Returns the value associated with a key and removes it from {\emph{d1}} (3) \tn % Row Count 8 (+ 4) % Row 11 \SetRowColor{LightBackground} `d1.clear()` & Clears the dictionary entirely \tn % Row Count 10 (+ 2) % Row 12 \SetRowColor{white} `d1.copy()`\textasciicircum{}2\textasciicircum{} & Returns a copy of d1 \tn % Row Count 11 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}--} \SetRowColor{LightBackground} \mymulticolumn{2}{x{8.4cm}}{\textasciicircum{}1\textasciicircum{} Using get() method prevents KeyError \newline \textasciicircum{}2\textasciicircum{} The copy() method returns a dictionary identical to the original, but with a different ID. It means that they are allocated in different places of memory.} \tn \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{8.4cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Dictionaries - Loop Through Items}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{d = \{'a': 1, 'b': 2, 'c': 3\} \newline \newline for i, j in d.items(): \newline print(f"Key: \{i\}, Value: \{j\}")} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{Key: a, Value: 1 \newline Key: b, Value: 2 \newline Key: c, Value: 3} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{8.4cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Dictionaries - Loop Through Keys}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{d = \{'a': 1, 'b': 2, 'c': 3\} \newline \newline for i in d.keys(): \newline print(f"Key: \{i\}")} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{Key: a \newline Key: b \newline Key: c} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{8.4cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Dictionaries - Loop Through Values}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{d = \{'a': 1, 'b': 2, 'c': 3\} \newline \newline for i in d.values(): \newline print(f"Values: \{i\}")} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{Values: 1 \newline Values: 2 \newline Values: 3} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} % That's all folks \end{multicols*} \end{document}