\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{jmds}
\pdfinfo{
  /Title (python-pep8-style-guide.pdf)
  /Creator (Cheatography)
  /Author (jmds)
  /Subject (Python PEP8 style guide Cheat Sheet)
}

% Lengths and widths
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\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
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\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{5262A3}
\definecolor{LightBackground}{HTML}{F4F5F9}
\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 PEP8 style guide Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{jmds} via \textcolor{DarkBackground}{\uline{cheatography.com/84942/cs/20012/}}}
\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}jmds \\
  \uline{cheatography.com/jmds} \\
  \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 10th July, 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{multicols*}{2}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Naming conventions}}  \tn
% Row 0
\SetRowColor{LightBackground}
Never use l, O, or I single letter names as these can be mistaken for 1 and 0, depending on typeface & O = 2  \# This may look like you're trying to reassign 2 to zero \tn 
% Row Count 5 (+ 5)
% Row 1
\SetRowColor{white}
{\bf{Function}} & function, my\_function \tn 
% Row Count 7 (+ 2)
% Row 2
\SetRowColor{LightBackground}
{\bf{Variable}} & x, var, my\_variable \tn 
% Row Count 8 (+ 1)
% Row 3
\SetRowColor{white}
{\bf{Class}} & Model, MyClass \tn 
% Row Count 9 (+ 1)
% Row 4
\SetRowColor{LightBackground}
{\bf{Method}} & class\_method, method \tn 
% Row Count 10 (+ 1)
% Row 5
\SetRowColor{white}
{\bf{Constant}} & CONSTANT, MY\_CONSTANT, MY\_LONG\_CONSTANT \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
{\bf{Module}} & module.py, my\_module.py \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
{\bf{Package}} & package, mypackage \tn 
% Row Count 15 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Maximum Line Length and Line Breaking}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{{\bf{PEP 8 suggests lines should be limited to 79 characters. This is because it allows you to have multiple files open next to one another, while also avoiding line wrapping.}} \newline  \newline  \newline {\bf{Python will assume line continuation if code is contained within parentheses, brackets, or braces:}} \newline def function(arg\_one, arg\_two, \newline              arg\_three, arg\_four): \newline     return arg\_one \newline  \newline  \newline {\bf{If it is impossible to use implied continuation, then you can use backslashes to break lines instead:}} \newline from mypkg import example1, \textbackslash{} \newline     example2, example3 \newline  \newline {\bf{\# Recommended}} \newline total = (first\_variable \newline          + second\_variable \newline          - third\_variable) \newline  \newline {\bf{\# Not Recommended}} \newline total = (first\_variable + \newline          second\_variable - \newline          third\_variable)} \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}{Identation}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Use 4 consecutive spaces to indicate indentation.} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Prefer spaces over tabs.} \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.584 cm} x{2.508 cm} x{2.508 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{8.4cm}}{\bf\textcolor{white}{Comments}}  \tn
% Row 0
\SetRowColor{LightBackground}
Limit the line length of comments and docstrings to 72 characters. & Use complete sentences, starting with a capital letter. & Make sure to update comments if you change your code. \tn 
% Row Count 6 (+ 6)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.584 cm} x{2.508 cm} x{2.508 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{8.4cm}}{\bf\textcolor{white}{Block Comments}}  \tn
% Row 0
\SetRowColor{LightBackground}
Indent block comments to the same level as the code they describe. & Start each line with a \# followed by a single space. & Separate paragraphs by a line containing a single \#. \tn 
% Row Count 6 (+ 6)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Inline Comments}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Use inline comments sparingly.} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Write inline comments on the same line as the statement they refer to.} \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Separate inline comments by two or more spaces from the statement.} \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Start inline comments with a \# and a single space, like block comments.} \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Don't use them to explain the obvious.} \tn 
% Row Count 8 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{When to Avoid Adding Whitespace}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{The most important place to avoid adding whitespace is at the end of a line. This is known as trailing whitespace} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Immediately inside parentheses, brackets, or braces:} \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Before a comma, semicolon, or colon:} \tn 
% Row Count 6 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Before the open parenthesis that starts the argument list of a function call:} \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Before the open bracket that starts an index or slice:} \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Between a trailing comma and a closing parenthesis:} \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{To align assignment operators:} \tn 
% Row Count 13 (+ 1)
% Row 7
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{immediately inside brackets, as well as before commas and colons.} \tn 
% Row Count 15 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Programming Recommendations}}  \tn
% Row 0
\SetRowColor{LightBackground}
Don't compare boolean values to True or False using the equivalence operator. & Use the fact that empty sequences are falsy in if statements. \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
Use is not rather than not ... is in if statements. & Don't use if x: when you mean if x is not None: \tn 
% Row Count 7 (+ 3)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{{\bf{Use .startswith() and .endswith() instead of slicing.}}} \tn 
% Row Count 9 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Code Layout}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{{\bf{Surround top-level functions and classes with two blank lines}}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{{\bf{Surround method definitions inside classes with a single blank line.}}} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{{\bf{Use blank lines sparingly inside functions to show clear steps.}}} \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Indentation Following Line Breaks}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{There are two styles of indentation you can use.} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{The first of these is to align the indented block with the opening delimiter:} \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{An alternative style of indentation following a line break is a hanging indent. This is a typographical term meaning that every line but the first in a paragraph or statement is indented.} \tn 
% Row Count 7 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Indentation Following Line Breaks 2}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{def function(arg\_one, arg\_two, \newline              arg\_three, arg\_four): \newline     return arg\_one \newline  \newline  \newline x = 5 \newline if (x \textgreater{} 3 and \newline     x \textless{} 10): \newline     print(x) \newline  \newline x = 5 \newline if (x \textgreater{} 3 and \newline     x \textless{} 10): \newline     \# Both conditions satisfied \newline     print(x) \newline  \newline x = 5 \newline if (x \textgreater{} 3 and \newline         x \textless{} 10): \newline     print(x) \newline  \newline \# hanging indent \newline var = function( \newline     arg\_one, arg\_two, \newline     arg\_three, arg\_four)} \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}{Where to Put the Closing Brace}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{{\bf{PEP 8 provides two options for the position of the closing brace in implied line continuations:}} \newline  \newline {\bf{1 - Line up the closing brace with the first non-whitespace character of the previous line:}} \newline  \newline list\_of\_numbers = {[} \newline     1, 2, 3, \newline     4, 5, 6, \newline     7, 8, 9 \newline     {]} \newline  \newline {\bf{2 - Line up the closing brace with the first character of the line that starts the construct:}} \newline list\_of\_numbers = {[} \newline     1, 2, 3, \newline     4, 5, 6, \newline     7, 8, 9 \newline {]}} \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}{Documentation Strings}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Surround docstrings with three double quotes on either side, as in """This is a docstring""".} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Write them for all public modules, functions, classes, and methods.} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Put the """ that ends a multiline docstring on a line by itself:} \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{For one-line docstrings, keep the """ on the same line:} \tn 
% Row Count 8 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.964 cm} x{2.964 cm} x{1.672 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{8.4cm}}{\bf\textcolor{white}{Whitespace Around Binary Operators}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{8.4cm}}{{\bf{Surround the following binary operators with a single space on either side:}}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Assignment operators (=, +=, -=, and so forth) & Comparisons (==, !=, \textgreater{}, \textless{}. \textgreater{}=, \textless{}=) and (is, is not, in, not in) & \seqsplit{Booleans} (and, not, or) \tn 
% Row Count 7 (+ 5)
% Row 2
\SetRowColor{LightBackground}
{\bf{When = is used to assign a default value to a function argument, do not surround it with spaces.}} & def \seqsplit{function(default\_parameter=5):} &  \tn 
% Row Count 14 (+ 7)
% Row 3
\SetRowColor{white}
y = x**2 + 5 & z = (x+y) * (x-y) &  \tn 
% Row Count 16 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{8.4cm}}{if x\textgreater{}5 and x\%2==0:} \tn 
% Row Count 17 (+ 1)
% Row 5
\SetRowColor{white}
\mymulticolumn{3}{x{8.4cm}}{\# Treat the colon as the operator with lowest priority} \tn 
% Row Count 19 (+ 2)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{8.4cm}}{list{[}x+1 : x+2{]}} \tn 
% Row Count 20 (+ 1)
% Row 7
\SetRowColor{white}
\mymulticolumn{3}{x{8.4cm}}{In an extended slice, both colons must be surrounded by the same amount of whitespace} \tn 
% Row Count 22 (+ 2)
% Row 8
\SetRowColor{LightBackground}
list{[}3:4:5{]} & list{[}x+1 : x+2 : x+3{]} &  \tn 
% Row Count 24 (+ 2)
% Row 9
\SetRowColor{white}
The space is omitted if a slice parameter is omitted & list{[}x+1 : x+2 :{]} &  \tn 
% Row Count 28 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{When to Ignore PEP 8}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{If complying with PEP 8 would break compatibility with existing software} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{If code surrounding what you're working on is inconsistent with PEP 8} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{If code needs to remain compatible with older versions of Python} \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}