\documentclass[10pt,a4paper]{article}

% Packages
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\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{Theo666}
\pdfinfo{
  /Title (python-chap-4.pdf)
  /Creator (Cheatography)
  /Author (Theo666)
  /Subject (Python\_Chap\_4 Cheat Sheet)
}

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% This two commands together give roughly
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% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
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% 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\_Chap\_4 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Theo666} via \textcolor{DarkBackground}{\uline{cheatography.com/193738/cs/40331/}}}
\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}Theo666 \\
  \uline{cheatography.com/theo666} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 17th September, 2023.\\
   Updated 30th September, 2023.\\
   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}{p{0.8 cm} p{0.8 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Lists}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{} \tn 
% Row Count 0 (+ 0)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{A list is a data structure that contains a series of values. Python allows the construction of a list containing values of different types. It's iterable, indexable, ordered, mutable and not hashable.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.36 cm} x{4.64 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{combination of lists and dictionaries}}  \tn
% Row 0
\SetRowColor{LightBackground}
{[}{[}...{]}, {[}...{]}, {[}...{]}, ...{]} & list of list \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
list\_of\_list{[}...{]}{[}...{]} & index elements in a list of list \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
dict\{key : {[}..., ...{]}\} & values of a dictionary can be a list \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
{[}dict1, dict2{]} & list of dictionary \tn 
% Row Count 7 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{But the keys of dictionary are hasables, not ordered and not duplicated.  \newline list{[}:{]} is a new list duplicating the original, so list{[}:{]}{[}0{]} will return the first element of the list}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.12 cm} x{4.88 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Operation in the lists}}  \tn
% Row 0
\SetRowColor{LightBackground}
list + list & add lists \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
list * int & multiply the list \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{- We cannont substract directly a list from another by using ' - ' . {[} i for i in list1 if i not in list2{]}; set(list1) - set(list2) \newline - To repeat each element of lists, {[}i for i in list for \_ in range(int){]} \newline - list\_1 +=  list\_2 equal to list\_1 = list\_1 + list\_2}  \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}{Examples}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{{[}i for i in range(10){]} \newline {[}i for i in range(31) if i \% 2 == 0{]} \newline {[}{[}m.upper(), len(m){]} for m in msg\_lst{]} \newline {[}seq{[}i:i+width{]} for i in range(0, len(seq), width){]}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.04 cm} x{4.96 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Common Functions}}  \tn
% Row 0
\SetRowColor{LightBackground}
`list{[}start:stop:step{]}` & list sciling (tranche) \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\seqsplit{`enumerate(list)`} & return positions and items \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{`list.index(item)`} & return the position of the item \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
\seqsplit{`list.count(item)`} & returns the number of times that element appears in the list \tn 
% Row Count 9 (+ 3)
% Row 4
\SetRowColor{LightBackground}
`list(string)` & convert a string to a list one by one charcter \tn 
% Row Count 11 (+ 2)
% Row 5
\SetRowColor{white}
\seqsplit{`string.split(sep)`} & convert a string to a list with a separator \tn 
% Row Count 13 (+ 2)
% Row 6
\SetRowColor{LightBackground}
\seqsplit{`'sep'.join(list)`} & convert a list to a string \tn 
% Row Count 15 (+ 2)
% Row 7
\SetRowColor{white}
`len(list)` & length of lists \tn 
% Row Count 16 (+ 1)
% Row 8
\SetRowColor{LightBackground}
`max(list)` & find the maximun \tn 
% Row Count 17 (+ 1)
% Row 9
\SetRowColor{white}
`min(list)` & find the minimun \tn 
% Row Count 18 (+ 1)
% Row 10
\SetRowColor{LightBackground}
`sum(list)` & calculate the sum \tn 
% Row Count 19 (+ 1)
% Row 11
\SetRowColor{white}
\seqsplit{`list.sort(reverse=)`} & sort the elements of a list in-place. reverse False from smallest to largest values; alphabetic order possible \tn 
% Row Count 24 (+ 5)
% Row 12
\SetRowColor{LightBackground}
`sorted(list, reverse=)` & create a new sorted list without modifying the original list; alphabetic order possible \tn 
% Row Count 28 (+ 4)
% Row 13
\SetRowColor{white}
\seqsplit{`list.reverse()`} & reverse the elements of a list in-place \tn 
% Row Count 30 (+ 2)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{8.4cm}{x{3.04 cm} x{4.96 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Common Functions (cont)}}  \tn
% Row 14
\SetRowColor{LightBackground}
\seqsplit{`reversed(list)`} & create a new reversed list without modifying the original list \tn 
% Row Count 3 (+ 3)
% Row 15
\SetRowColor{white}
\seqsplit{`list.append(item)`} & add an element to the end of lists \tn 
% Row Count 5 (+ 2)
% Row 16
\SetRowColor{LightBackground}
\seqsplit{`list.insert(item}, pos)` & insert an element at a position of lists \tn 
% Row Count 7 (+ 2)
% Row 17
\SetRowColor{white}
\seqsplit{`list.remove(item)`} & remove an item from lists; remove only one first element. \tn 
% Row Count 10 (+ 3)
% Row 18
\SetRowColor{LightBackground}
`list.pop()` & remove and return the last element \tn 
% Row Count 12 (+ 2)
% Row 19
\SetRowColor{white}
`del list{[}pos{]}` & remove the item by its position idenx \tn 
% Row Count 14 (+ 2)
% Row 20
\SetRowColor{LightBackground}
`range(start,stop,step)` & similar to lists, but immutable. stop at n-1 \tn 
% Row Count 16 (+ 2)
% Row 21
\SetRowColor{white}
`set(list)` & remove the duplicated elements \tn 
% Row Count 18 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{- `list{[}start:stop:step{]}` step 1 by default; stop at n-1 even if negative index \newline - `list{[}:{]}` create a new list. lst2 = lst1 creates a reference to the original list with the same ID \newline - `'sep'.join(list)` cannot combine a list containing only number (int \& float). {[}str(i) for i in list{]} \newline - `list.remove(item)` If there're duplicated elements, it remove only the first element \newline - `range(start,stop,step)` stop could be higher than start with a negative step}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}