getting-started-ipython/slides.org
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#+LaTeX_CLASS: beamer
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#+LaTeX_CLASS_OPTIONS: [presentation]
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#+BEAMER_FRAME_LEVEL: 1
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#+BEAMER_HEADER_EXTRA: \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
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#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra)
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#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 :ETC
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#+LaTeX_CLASS: beamer
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#+LaTeX_CLASS_OPTIONS: [presentation]
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#+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl}
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#+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet}
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#+LaTeX_HEADER:\usepackage{listings}
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#+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries,
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#+LaTeX_HEADER:  commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen},
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#+LaTeX_HEADER:  showstringspaces=false, keywordstyle=\color{blue}\bfseries}
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#+TITLE:    Getting Started -- ~ipython~
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#+AUTHOR:    FOSSEE
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#+EMAIL:     
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#+DATE:    
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#+DESCRIPTION: 
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#+KEYWORDS: 
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#+LANGUAGE:  en
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#+OPTIONS:   H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
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#+OPTIONS:   TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc
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* Outline
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  + invoke the ~ipython~ interpreter
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  + quit the ~ipython~ interpreter
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  + navigate in the history of ~ipython~
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  + use tab-completion
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  + look-up documentation of functions
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  + interrupt incomplete or incorrect commands
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* Question 1
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  Type =ab= and hit tab to see what happens. Next, just type =a= and
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  hit tab to see what happens.
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* Solution 1
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  =ab= tab completes to =abs= and =a<tab>= gives us a list of all the
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  commands starting with a.
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* Question 2
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  Look-up the documentation of =round= and see how to use it.
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* Solution 2
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  =round?=
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* Question 3
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  Check the output of
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  #+begin_src python
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    round(2.48)
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    round(2.48, 1)
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    round(2.48, 2)
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    round(2.484)
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    round(2.484, 1)
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    round(2.484, 2)
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  #+end_src 
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  Look-up the documentation of =round= and see how to use it.
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* Solution 3
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  We get 2.0, 2.5 and 2.48, which are what we expect. 
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* Question 4
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  Try typing =round(2.484=, and hit enter. and then cancel the command
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  using Ctrl-C. Then, type the command, =round(2.484, 2)= and resume
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  the video.
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* Solution 4
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  #+begin_src python
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    round(2.484 
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    ^C
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    round(2.484, 2)
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  #+end_src 
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* Summary
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  + invoking and quitting the ~ipython~ interpreter
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  + navigating the history
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  + using tab-completion to work faster
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  + looking-up documentation using ~?~
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  + sending keyboard interrupts using ~Ctrl-C~
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* Thank you!
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#+begin_latex
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  \begin{block}{}
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  \begin{center}
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  This spoken tutorial has been produced by the
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  \textcolor{blue}{FOSSEE} team, which is funded by the 
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  \end{center}
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  \begin{center}
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    \textcolor{blue}{National Mission on Education through \\
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      Information \& Communication Technology \\ 
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      MHRD, Govt. of India}.
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  \end{center}  
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  \end{block}
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#+end_latex
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