\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{dstark0011}
\pdfinfo{
  /Title (pandas-cheat-sheet-rev2.pdf)
  /Creator (Cheatography)
  /Author (dstark0011)
  /Subject (Pandas  Rev2 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}{3489A3}
\definecolor{LightBackground}{HTML}{F2F7F9}
\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{Pandas  Rev2 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{dstark0011} via \textcolor{DarkBackground}{\uline{cheatography.com/129050/cs/25448/}}}
\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}dstark0011 \\
  \uline{cheatography.com/dstark0011} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 27th November, 2020.\\
   Updated 27th November, 2020.\\
   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{4.48 cm} x{3.52 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Import Data}}  \tn
% Row 0
\SetRowColor{LightBackground}
df = \seqsplit{pd.read\_csv('filename.csv')} & Read CSV into a Pandas DataFrame \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
df = \seqsplit{pd.to\_csv('filename.csv')} & Export Pandas DataFrame to CSV \tn 
% Row Count 4 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{Import Options: \newline  \newline header=False, Index=False, usecols=(5,6) \newline  \newline Can also read CSV / HTML / Excel / JSON}  \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}{Combine multiple files into one (1) DataFrame}}  \tn
% Row 0
\SetRowColor{LightBackground}
all\_files = glob.glob({\emph{*/}}.txt') & Finds all txt files in the \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
df\_raw = {[}pd.read\_csv(f) for f in all\_files{]} & Makes multiple DataFrames \tn 
% Row Count 5 (+ 3)
% Row 2
\SetRowColor{LightBackground}
df\_all = pd.concat(df\_raw, ignore\_index=True & Concatenates all the DataFrames into one (1) large DataFrame \tn 
% Row Count 8 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{1.6 cm} x{6.4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Select Data}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{df.head(5)} & Reads the first 5 rows \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\seqsplit{df.tail(5)} & Reads the last 5 rows \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{df.shape()} & Gives the number of columns and rows in the DataFrame \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.72 cm} x{5.28 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Select Row}}  \tn
% Row 0
\SetRowColor{LightBackground}
data.iloc{[}0{]} & First row of DataFrame \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
data.iloc{[}1{]} & Second row of DataFrame \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.64 cm} x{5.36 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Select Column}}  \tn
% Row 0
\SetRowColor{LightBackground}
data.iloc{[}:0{]} & First column of DataFrame \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
data.iloc{[}:1{]} & Second column of DataFrame \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.76 cm} x{4.24 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Select Column and Row Combined}}  \tn
% Row 0
\SetRowColor{LightBackground}
df.iloc{[}:3, :2{]} & Selecting first 3 rows and first 2 columns \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
df.iloc{[}:3, {[}'Column1', 'Column2'{]}{]} & Selecting first 3 rows and first 2 columns \tn 
% Row Count 4 (+ 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}{Re-Order Colums}}  \tn
% Row 0
\SetRowColor{LightBackground}
df = df{[}{[}'Column3', 'Column2', 'Column1'{]}{]} & Re-orders the columns to the order specified in this list \tn 
% Row Count 3 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4.24 cm} x{3.76 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Drop Columns}}  \tn
% Row 0
\SetRowColor{LightBackground}
df= df.drop(columns={[}'Column1'{]}, axis=1) & Drops 'Column1\_Name' from DataFrame \tn 
% Row Count 2 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{5.2 cm} x{2.8 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Sort Columns}}  \tn
% Row 0
\SetRowColor{LightBackground}
df = df.sort\_values(by={[}'Column1'{]}, ascending=False) & Sort values by Column1 \tn 
% Row Count 2 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4.4 cm} x{3.6 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Filter Column}}  \tn
% Row 0
\SetRowColor{LightBackground}
df= df{[}(df{[}'Column1'{]} \textgreater{}= some\_number{]} & Filter DataFrame by certain value \tn 
% Row Count 3 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.44 cm} x{4.56 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Rename Columns}}  \tn
% Row 0
\SetRowColor{LightBackground}
df.columns = {[}'A', 'B'{]} & Renamed Columns to 'A' and 'B' \tn 
% Row Count 2 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4.4 cm} x{3.6 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Merge DataFrames}}  \tn
% Row 0
\SetRowColor{LightBackground}
df1.append(df2) & Joins df1 and df2 \tn 
% Row Count 1 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.84 cm} x{4.16 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Filter on Condition}}  \tn
% Row 0
\SetRowColor{LightBackground}
df = df{[}(df\textgreater{} 2).all(axis=1){]} & Removes any values less than 2 \tn 
% Row Count 2 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.84 cm} x{4.16 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Select Row Based on Condition}}  \tn
% Row 0
\SetRowColor{LightBackground}
row = df{[}df.A \textgreater{} 3{]}.iloc{[}0{]} & Select first row where A \textgreater{} 0 \tn 
% Row Count 2 (+ 2)
\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}{Dealing with NAN values}}  \tn
% Row 0
\SetRowColor{LightBackground}
df= \seqsplit{df.fillna(method='ffill')} & Fills blank values using forward fill method \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
df= \seqsplit{df.fillna(method='bfill')} & Fills blank values using backwards fill method \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{df.dropna(inplace=True)} & Removes rows with no values \tn 
% Row Count 6 (+ 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}{Padding Values With Zero's}}  \tn
% Row 0
\SetRowColor{LightBackground}
df{[}'Column1'{]} = df{[}'Column1'{]}.astype(str).str.zfill(6) & Sets the numbe to six (6) long, which adds zeros \tn 
% Row Count 3 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4.96 cm} x{3.04 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Change Column Data Type}}  \tn
% Row 0
\SetRowColor{LightBackground}
df{[}'Column1'{]}= df{[}'Column1'{]}.astype(float) & Change 'Column1' to float \tn 
% Row Count 2 (+ 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}{Convert Column to Date / Time}}  \tn
% Row 0
\SetRowColor{LightBackground}
df{[}'Time'{]} = df{[}'Time'{]}.apply(pd.to\_datetime) & Converts the time column to a Datetime Series \tn 
% Row Count 3 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}