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#+LaTeX_CLASS: beamer
#+LaTeX_CLASS_OPTIONS: [presentation]
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#+LaTeX_CLASS: beamer
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#+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
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*
#+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
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