\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{faq}
\pdfinfo{
  /Title (python-for-interview.pdf)
  /Creator (Cheatography)
  /Author (faq)
  /Subject (python for interview 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}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\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 for interview Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{faq} via \textcolor{DarkBackground}{\uline{cheatography.com/132873/cs/26953/}}}
\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}faq \\
  \uline{cheatography.com/faq} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 11th March, 2021.\\
   Updated 23rd March, 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{1.54287 cm} x{3.43413 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Queues}}  \tn
% Row 0
\SetRowColor{LightBackground}
Priority Queue & from queue import PriorityQueue \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
 & customers = PriorityQueue() \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
 & customers.put((2, "Harry")) \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
 & while customers: \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
 & print(customers.get()) \tn 
% Row Count 6 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Heaps}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{import heapq} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
heapq.heapify(li) & transform array "li" into min-heap \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{heapq.\_heapify\_max(li)} & transform array "li" into max-heap \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
heapq.heappush(li,4) & push element in the heap \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
heapq.heappop(li) & pop the smallest element \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
heapq.nlargest(3, li1) & get the 3 largest numbers \tn 
% Row Count 11 (+ 2)
% Row 6
\SetRowColor{LightBackground}
heapq.nsmallest(3, li1) & get the 3 smallest numbers \tn 
% Row Count 13 (+ 2)
% Row 7
\SetRowColor{white}
heapq.nsmallest(3, tuple\_list, key=lambda x: x{[}1{]}) & if we want 3 smallest tuple\_list second dimension \tn 
% Row Count 16 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.54287 cm} x{3.43413 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Deque}}  \tn
% Row 0
\SetRowColor{LightBackground}
deque sized & window = deque(maxlen=3) \tn 
% Row Count 1 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.94103 cm} x{3.03597 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{String}}  \tn
% Row 0
\SetRowColor{LightBackground}
Split & string.split(" ", 1) //split first occ \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Replace & str.replace('e', '') \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
Replace first occurrence & str.replace('e', '',1) \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
Remove symbols from phrase & paragraph = ''.join({[}c.lower() if c.isalnum() else ' ' for c in paragraph{]}) \tn 
% Row Count 9 (+ 4)
% Row 4
\SetRowColor{LightBackground}
check array if matches & banned\_words = set(banned)\{\{nl\}\}for word in toCount:\{\{nl\}\}~if word not in banned\_words:\{\{nl\}\}~... \tn 
% Row Count 14 (+ 5)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.69218 cm} x{3.28482 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Arrays}}  \tn
% Row 0
\SetRowColor{LightBackground}
array of set capacity & LRUcache = {[}{]} * capacity \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
sort to new & new\_list = sorted(old\_list, key=..., reverse=...) \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
sort in place & list.sort(key=..., reverse=...) \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
sort by len & list.sort(key=len) \tn 
% Row Count 7 (+ 1)
% Row 4
\SetRowColor{LightBackground}
sort column & def takeSecond(elem):\{\{nl\}\} ~~~return elem{[}1{]} \{\{nl\}\}list.sort(key=takeSecond) \tn 
% Row Count 11 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{sort on objects}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{p{5.377cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/faq_1615204659_Screen Shot 2021-03-08 at 11.56.02.png}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.89126 cm} x{3.08574 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Dict}}  \tn
% Row 0
\SetRowColor{LightBackground}
create dict & dict = \{\} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
return keys arr & dict.keys() \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
return values arr & dict.values() \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
order a dict by value & from operator import itemgetter\{\{nl\}\}sorted\_keys = sorted(toReduce.items(), key=itemgetter(1)) \tn 
% Row Count 8 (+ 4)
% Row 4
\SetRowColor{LightBackground}
orderdict & from collections import OrderedDict\{\{nl\}\}~~d = OrderedDict()\{\{nl\}\}~~d.move\_to\_end('key') \tn 
% Row Count 13 (+ 5)
% Row 5
\SetRowColor{white}
orderdict by value & from collections import OrderedDict\{\{nl\}\}from operator import itemgetter\{\{nl\}\}~~OrderedDict(sorted(d.items(), key = itemgetter(1), reverse = True)) \tn 
% Row Count 20 (+ 7)
% Row 6
\SetRowColor{LightBackground}
put in first position & d.move\_to\_end('key',last=False) \tn 
% Row Count 22 (+ 2)
% Row 7
\SetRowColor{white}
comprehension list val*2 & dict\_variable = \{key:value*2 for (key,value) in dictonary.items()\} \tn 
% Row Count 25 (+ 3)
% Row 8
\SetRowColor{LightBackground}
dict with array as key & dictionary{[}tuple(arr){]} = val \tn 
% Row Count 27 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.84149 cm} x{3.13551 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Classes}}  \tn
% Row 0
\SetRowColor{LightBackground}
initialise & \_\_init\_\_(self, var1, var2) \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
create iterable & \_\_iter\_\_(self) \tn 
% Row Count 4 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{0.9954 cm} x{3.9816 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Files}}  \tn
% Row 0
\SetRowColor{LightBackground}
Read file & wfile = open(wordFile, ' r') \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
split line & for line in wfile:\{\{nl\}\}~word = line{[}:-1{]} \tn 
% Row Count 4 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}