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% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
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% Document Info
\author{Nima (nimakarimian)}
\pdfinfo{
  /Title (python3-dictionary-everything-you-need-to-know.pdf)
  /Creator (Cheatography)
  /Author (Nima (nimakarimian))
  /Subject (Python3 Dictionary: Everything you need to know Cheat Sheet)
}

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% Header and Footer
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\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
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    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
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\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Python3 Dictionary: Everything you need to know Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Nima (nimakarimian)} via \textcolor{DarkBackground}{\uline{cheatography.com/113429/cs/23543/}}}
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\noindent
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  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}Nima (nimakarimian) \\
  \uline{cheatography.com/nimakarimian} \\
        \uline{\seqsplit{www}.nimakarimian.ir}
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  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 26th June, 2020.\\
   Updated 26th June, 2020.\\
   Page {\thepage} of \pageref{LastPage}.
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  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
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\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}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Dictionaries}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{ages = \{"Dave": 24, "Mary": 42, "John": 58\} \newline print(ages{[}"Dave"{]}) \newline print(ages{[}"Mary"{]}) \newline OR \newline primary = \{ \newline   "red": {[}255, 0, 0{]},  \newline   "green": {[}0, 255, 0{]},  \newline   "blue": {[}0, 0, 255{]},  \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Dictionaries are data structures used to map arbitrary keys to values}  \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}{get Function}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{pairs = \{1: "apple", \newline   "orange": {[}2, 3, 4{]},  \newline   True: False,  \newline   None: "True", \newline \} \newline  \newline print(pairs.get("orange")) \newline print(pairs.get(7)) \newline print(pairs.get(12345, "not in dictionary")) \newline ........... \newline \textgreater{}\textgreater{}\textgreater{} \newline {[}2, 3, 4{]} \newline None \newline not in dictionary \newline \textgreater{}\textgreater{}\textgreater{}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{A useful dictionary method is get. It does the same thing as indexing, but if the key is not found in the dictionary it returns another specified value instead ('None', by default).}  \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}{Assignment}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{squares = \{1: 1, 2: 4, 3: "error", 4: 16,\} \newline squares{[}8{]} = 64 \newline squares{[}3{]} = 9 \newline print(squares) \newline -{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-- \newline \{1: 1, 2: 4, 3: 9, 4: 16, 8: 64\}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Just like lists, dictionary keys can be assigned to different values.}  \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}{finding keys}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{nums = \{ \newline   1: "one", \newline   2: "two", \newline   3: "three", \newline \} \newline print(1 {\bf{in}} nums) \newline print(4 {\bf{not in}} nums) \newline print({\bf{not}} 4 {\bf{in}} nums) \newline -{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-- \newline True \newline True} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{To determine whether a key is in a dictionary, you can use in and not in, just as you can for a list.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}