#+LaTeX_CLASS: beamer #+LaTeX_CLASS_OPTIONS: [presentation] #+BEAMER_FRAME_LEVEL: 1 #+BEAMER_HEADER_EXTRA: \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent} #+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra) #+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 #+LaTeX_CLASS: beamer #+LaTeX_CLASS_OPTIONS: [presentation] #+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl} #+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet} #+LaTeX_HEADER: \usepackage{listings} #+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries, #+LaTeX_HEADER: commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen}, #+LaTeX_HEADER: showstringspaces=false, keywordstyle=\color{blue}\bfseries} #+TITLE: #+AUTHOR: FOSSEE #+EMAIL: #+DATE: #+DESCRIPTION: #+KEYWORDS: #+LANGUAGE: en #+OPTIONS: H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t #+OPTIONS: TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc * #+begin_latex \begin{center} \vspace{12pt} \textcolor{blue}{\huge Getting started with Files} \end{center} \vspace{18pt} \begin{center} \vspace{10pt} \includegraphics[scale=0.95]{../images/fossee-logo.png}\\ \vspace{5pt} \scriptsize Developed by FOSSEE Team, IIT-Bombay. \\ \scriptsize Funded by National Mission on Education through ICT\\ \scriptsize MHRD,Govt. of India\\ \includegraphics[scale=0.30]{../images/iitb-logo.png}\\ \end{center} #+end_latex * Objectives At the end of this tutorial, you will be able to, - Open a file. - Read the contents of the file line by line. - Read the entire content of file at once. - Append the lines of a file to a list. - Close the file. * Pre-requisite Spoken tutorial on - - Getting started with Lists. - Getting started with For. * Exercise 1 Split the variable into a list, =pend_list=, of the lines in the file. * Exercise 2 Re-open the file =pendulum.txt= with =f= as the file object. * Summary In this tutorial, we have learnt to – - Open and close files using the ``open`` and ``close`` functions respectively. - Read the data in the files as a whole,by using the ``read`` function. - Read the data in the files line by line by iterating over the file object using the ``for`` loop. - Append the lines of a file to a list using the ``append`` function within the ``for`` loop. * Evaluation 1. The ``open`` function returns a - string - list - file object - function 2. What does the function ``splitlines()`` do. - Displays the data as strings,all in a line - Displays the data line by line as strings - Displays the data line by line but not as strings * Solutions 1. file object 2. Displays the data line by line as strings * #+begin_latex \begin{block}{} \begin{center} \textcolor{blue}{\Large THANK YOU!} \end{center} \end{block} \begin{block}{} \begin{center} For more Information, visit our website\\ \url{http://fossee.in/} \end{center} \end{block} #+end_latex