\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-overview.pdf) /Creator (Cheatography) /Author (Mario (mariofreitas)) /Subject (Python Basics - Overview 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 - Overview Cheat Sheet}}}} \\ \normalsize{by \textcolor{DarkBackground}{Mario (mariofreitas)} via \textcolor{DarkBackground}{\uline{cheatography.com/42813/cs/12845/}}} \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 22nd 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{5.76 cm} x{2.24 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Variable Types}} \tn % Row 0 \SetRowColor{LightBackground} `10` & Int \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} `10.0` & Float \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} `10 + 2j` & Complex \tn % Row Count 3 (+ 1) % Row 3 \SetRowColor{white} `"string"` or `'string'` & String \tn % Row Count 4 (+ 1) % Row 4 \SetRowColor{LightBackground} `(1, 2, 3)` & Tuple \tn % Row Count 5 (+ 1) % Row 5 \SetRowColor{white} `{[}1, 2, 3{]}` & List \tn % Row Count 6 (+ 1) % Row 6 \SetRowColor{LightBackground} `\{'a': 1, 'b': 2, 'c': 3\}` & Dictionary \tn % Row Count 7 (+ 1) % Row 7 \SetRowColor{white} `\{1, 4, 5\}` & Set \tn % Row Count 8 (+ 1) % Row 8 \SetRowColor{LightBackground} `True` and `False` & Booleans \tn % Row Count 9 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{8.4cm}{x{2.96 cm} x{5.04 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Basic Functions}} \tn % Row 0 \SetRowColor{LightBackground} `print(s)` & Prints the string {\emph{s}} to the screen \tn % Row Count 2 (+ 2) % Row 1 \SetRowColor{white} `input(msg)`\{\{nobreak\}\} & Prints the {\emph{msg}} to the screen, waits for user keyboard input and returns the input as string \tn % Row Count 6 (+ 4) % Row 2 \SetRowColor{LightBackground} `len(x)` & Returns the number of elements of the sequence {\emph{x}} \tn % Row Count 8 (+ 2) % Row 3 \SetRowColor{white} `help(x)` & Returns the help (docstring) of a module or function \tn % Row Count 11 (+ 3) % Row 4 \SetRowColor{LightBackground} `eval(x)` & Evaluates a string and executes it as a line of code \tn % Row Count 14 (+ 3) % Row 5 \SetRowColor{white} `exec(x)` & Evaluates a block of code in a string or a code object \tn % Row Count 17 (+ 3) % Row 6 \SetRowColor{LightBackground} `max(x)` & Returns the greatest value in a sequence \tn % Row Count 19 (+ 2) % Row 7 \SetRowColor{white} `min(x)` & Returns the smallest value in a sequence \tn % Row Count 21 (+ 2) % Row 8 \SetRowColor{LightBackground} `type(x)` & Returns the variable type of {\emph{x}} \tn % Row Count 23 (+ 2) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{8.4cm}{x{1.76 cm} x{6.24 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Variable Assignment and Operations}} \tn % Row 0 \SetRowColor{LightBackground} `a = 10` & Assigns {\emph{10}} to {\emph{a}} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} `b = 5` & Assigns {\emph{5}} to {\emph{b}} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} `c = a + b` & Evaluates {\emph{a}} + {\emph{b}} and assigns it to {\emph{c}} \tn % Row Count 4 (+ 2) % Row 3 \SetRowColor{white} \seqsplit{`print(c)`} & Prints the value of {\emph{c}} (15) \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}{If Statements}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{a = 5 \newline n = 6 \newline \newline if a \textgreater{} n**3: \newline print("Is much greater") \newline elif a \textgreater{} n: \newline print("Is greater") \newline else: \newline print("Is lower")} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{Is lower} \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}{For Loop}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{a = 0 \newline \newline for i in range(1, 101): \newline a += i \newline \newline print(a)} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{5050} \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}{While Loop}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{a = 0 \newline i = 1 \newline \newline while i \textless{} 101: \newline a += i \newline i += 1 \newline \newline print(a)} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{5050} \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}{Function}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{def double(x): \newline return 2*x \newline \newline print(double(3))} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{6} \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}{Function with Default Arguments}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{def multiply(a, b=1): \newline return a * b \newline \newline x1 = multiply(3, 4) \newline x2 = multiply(5) \newline \newline print(f"x1 = \{x1\}") \newline print(f"x2 = \{x2\}")} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{x1 = 12 \newline x2 = 5} \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}{Function - Keyword Arguments}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{def kword\_func(a, b, c): \newline print(f"a = \{a\}") \newline print(f"b = \{b\}") \newline print(f"c = \{c\}") \newline \newline kword\_func(c=10, a=5, b=2)} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{a = 5 \newline b = 2 \newline c = 10} \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}{Lambda Function}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{f = lambda x, y: x{\bf{2 + x*y + y}}2 \newline print(f(2, 3))} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{19} \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}{List Comprehension}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{lc = {[}i**2 for i in range(6){]} \newline \newline print(lc)} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{{[}0, 1, 4, 9, 16, 25{]}} \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}{Dictionary Comprehension}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{from math import factorial \newline dc = \{i:factorial(i) for i in range(7)\} \newline print(dc)} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{\{0: 1, 1: 1, 2: 2, 3: 6, 4: 24, 5: 120, 6: 720\}} \tn \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}{Python Keywords}} \tn % Row 0 \SetRowColor{LightBackground} `if` & Starts an if statement definition \tn % Row Count 2 (+ 2) % Row 1 \SetRowColor{white} `elseif` & Tests another condition if the previous isn't {\emph{True}} \tn % Row Count 5 (+ 3) % Row 2 \SetRowColor{LightBackground} `else` & Executes the block of code if all previous tests are {\emph{False}} \tn % Row Count 8 (+ 3) % Row 3 \SetRowColor{white} `and` & Returns {\emph{True}} only if both statements are {\emph{True}} \tn % Row Count 11 (+ 3) % Row 4 \SetRowColor{LightBackground} `or` & Returns {\emph{True}} if at least one statement is {\emph{True}} \tn % Row Count 14 (+ 3) % Row 5 \SetRowColor{white} `not` & Returns the opposite Boolean \tn % Row Count 16 (+ 2) % Row 6 \SetRowColor{LightBackground} `in` (on if statements) & Checks if an element is in a sequence \tn % Row Count 18 (+ 2) % Row 7 \SetRowColor{white} `is` & Checks if two elements are equal to each other \tn % Row Count 21 (+ 3) % Row 8 \SetRowColor{LightBackground} `assert` & Checks a logic test and raises an error message if the test fails \tn % Row Count 25 (+ 4) % Row 9 \SetRowColor{white} `while` & Starts a while loop definition \tn % Row Count 27 (+ 2) % Row 10 \SetRowColor{LightBackground} `for` & Starts a for loop definition \tn % Row Count 29 (+ 2) % Row 11 \SetRowColor{white} `in` (on for loop statements)\{\{nobreak\}\} & Takes each element of a sequence, one per iteration \tn % Row Count 32 (+ 3) \end{tabularx} \par\addvspace{1.3em} \vfill \columnbreak \begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Python Keywords (cont)}} \tn % Row 12 \SetRowColor{LightBackground} `continue` & Skips to the next loop iteration \tn % Row Count 2 (+ 2) % Row 13 \SetRowColor{white} `break` & Exits loop statement \tn % Row Count 3 (+ 1) % Row 14 \SetRowColor{LightBackground} `def` & Starts a function definition \tn % Row Count 5 (+ 2) % Row 15 \SetRowColor{white} `lambda` & Starts a lambda function definition \tn % Row Count 7 (+ 2) % Row 16 \SetRowColor{LightBackground} `return` & Exits function and returns a value \tn % Row Count 9 (+ 2) % Row 17 \SetRowColor{white} `yield` & Used to create generators. Returns a value but allows to resume the function \tn % Row Count 13 (+ 4) % Row 18 \SetRowColor{LightBackground} `class` & Starts a class definition \tn % Row Count 15 (+ 2) % Row 19 \SetRowColor{white} `pass` & Does nothing. Used where a block of text is need syntactically \tn % Row Count 19 (+ 4) % Row 20 \SetRowColor{LightBackground} `from` & From a module or library... \tn % Row Count 21 (+ 2) % Row 21 \SetRowColor{white} `import` & Imports a module or function... \tn % Row Count 23 (+ 2) % Row 22 \SetRowColor{LightBackground} `as` & With this name... \tn % Row Count 24 (+ 1) % Row 23 \SetRowColor{white} `try` & Starts an exception handling statement \tn % Row Count 26 (+ 2) % Row 24 \SetRowColor{LightBackground} `except` & Catches an exception \tn % Row Count 27 (+ 1) % Row 25 \SetRowColor{white} `finally` & Executes at the end of the exception handling statement \tn % Row Count 30 (+ 3) \end{tabularx} \par\addvspace{1.3em} \vfill \columnbreak \begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Python Keywords (cont)}} \tn % Row 26 \SetRowColor{LightBackground} `raise` & Throws an error \tn % Row Count 1 (+ 1) % Row 27 \SetRowColor{white} `global` & Make a variable global \tn % Row Count 3 (+ 2) % Row 28 \SetRowColor{LightBackground} `local` & Make a variable local \tn % Row Count 5 (+ 2) % Row 29 \SetRowColor{white} `with` & Wraps code block with methods defined by a context manager \tn % Row Count 8 (+ 3) % Row 30 \SetRowColor{LightBackground} `del` & Delete a variable from memory \tn % Row Count 10 (+ 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}{Write File}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{a = {[}1, 3, 2, 5, 6, 2, 4{]} \newline b = {[}3, 5, 1 ,2 ,7, 7, 8{]} \newline \newline with open('data.csv', 'w') as file: \newline for i, j in zip(a, b): \newline file.write(f"\{i\}, \{j\}\textbackslash{}n")} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{This code writes a csv file based on the data in {\emph{a}} and {\emph{b}}} \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}{Read File}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{with open('data.csv', 'r') as file: \newline for line in file: \newline print(line)} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{This code reads the file and prints it line by line.} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} % That's all folks \end{multicols*} \end{document}