# HG changeset patch # User Puneeth Chaganti # Date 1286777443 -19800 # Node ID 44f06ae0d957c2144869c6dd8f40fdb65b811d62 # Parent 7c4855fb8e5f7a8b63ea606cdce84d9fd968f795 Slides for manipulating strings LO. diff -r 7c4855fb8e5f -r 44f06ae0d957 manipulating-strings/script.rst --- a/manipulating-strings/script.rst Mon Oct 11 11:40:04 2010 +0530 +++ b/manipulating-strings/script.rst Mon Oct 11 11:40:43 2010 +0530 @@ -6,7 +6,7 @@ .. 1. Slice strings and get sub-strings out of them .. #. Reverse strings .. #. Replace characters in strings. -.. #. Convert to strings to upper or lower case +.. #. Convert strings to upper or lower case .. #. joining a list of strings .. Prerequisites @@ -84,7 +84,7 @@ Following is an exercise that you must do. %%1%% Obtain the sub-string excluding the first and last characters -from the string. +from the string s. Please, pause the video here. Do the exercise(s) and then continue. @@ -167,6 +167,8 @@ :: + s in week + s.lower()[:3] in week We just convert any input string to lower case and then check if it is @@ -191,7 +193,7 @@ Following is an exercise that you must do. -%%3%% Replace the ``[dot]`` with ``.`` +%%3%% Replace the ``[dot]`` with ``.`` in ``email`` Please, pause the video here. Do the exercise and then continue. diff -r 7c4855fb8e5f -r 44f06ae0d957 manipulating-strings/slides.org --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/manipulating-strings/slides.org Mon Oct 11 11:40:43 2010 +0530 @@ -0,0 +1,94 @@ +#+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: Manipulating strings +#+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 + +* Outline + - Slicing strings to get sub-strings + - Reversing strings + - Replacing characters in strings. + - Converting strings to upper or lower case + - Joining a list of strings +* Question 1 + Obtain the sub-string excluding the first and last characters from + the string ~s~. +* Solution 1 + #+begin_src python + In []: s[1:-1] + #+end_src +* Question 2 + Given a list week, week = ~week = ["sun", "mon", "tue", "wed", + "thu", "fri", "sat"]~. Check if ~s~ is a valid name of a day of the + week. Change the solution to this problem, to include forms like, + SAT, SATURDAY, Saturday and Sat. +* Solution 2 + #+begin_src python + In []: s in week + In []: s.lower()[:3] in week + #+end_src +* Question 3 + Given ~email~ -- ~info@fossee[dot]in~ + + Replace the ~[dot]~ with ~.~ in ~email~ +* Solution 3 + #+begin_src python + email.replace('[dot], '.') + print email + #+end_src +* Question 4 + From the ~email_str~ that we generated, change the separator to be a + semicolon instead of a comma. +* Solution 4 + #+begin_src python + email_str = email_str.replace(",", ";") + #+end_src +* Summary + You should now be able to -- + - Slice strings and get sub-strings out of them + - Reverse strings + - Replace characters in strings. + - Convert strings to upper or lower case + - Join a list of strings + +* Thank you! +#+begin_latex + \begin{block}{} + \begin{center} + This spoken tutorial has been produced by the + \textcolor{blue}{FOSSEE} team, which is funded by the + \end{center} + \begin{center} + \textcolor{blue}{National Mission on Education through \\ + Information \& Communication Technology \\ + MHRD, Govt. of India}. + \end{center} + \end{block} +#+end_latex + + diff -r 7c4855fb8e5f -r 44f06ae0d957 manipulating-strings/slides.tex --- a/manipulating-strings/slides.tex Mon Oct 11 11:40:04 2010 +0530 +++ b/manipulating-strings/slides.tex Mon Oct 11 11:40:43 2010 +0530 @@ -1,95 +1,142 @@ -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%Tutorial slides on Python. -% -% Author: FOSSEE -% Copyright (c) 2009, FOSSEE, IIT Bombay -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% - -\documentclass[14pt,compress]{beamer} -%\documentclass[draft]{beamer} -%\documentclass[compress,handout]{beamer} -%\usepackage{pgfpages} -%\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm] - -% Modified from: generic-ornate-15min-45min.de.tex -\mode -{ - \usetheme{Warsaw} - \useoutertheme{infolines} - \setbeamercovered{transparent} -} - -\usepackage[english]{babel} +% Created 2010-10-11 Mon 11:27 +\documentclass[presentation]{beamer} \usepackage[latin1]{inputenc} -%\usepackage{times} \usepackage[T1]{fontenc} - -\usepackage{ae,aecompl} -\usepackage{mathpazo,courier,euler} -\usepackage[scaled=.95]{helvet} +\usepackage{fixltx2e} +\usepackage{graphicx} +\usepackage{longtable} +\usepackage{float} +\usepackage{wrapfig} +\usepackage{soul} +\usepackage{textcomp} +\usepackage{marvosym} +\usepackage{wasysym} +\usepackage{latexsym} +\usepackage{amssymb} +\usepackage{hyperref} +\tolerance=1000 +\usepackage[english]{babel} \usepackage{ae,aecompl} +\usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet} +\usepackage{listings} +\lstset{language=Python, basicstyle=\ttfamily\bfseries, +commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen}, +showstringspaces=false, keywordstyle=\color{blue}\bfseries} +\providecommand{\alert}[1]{\textbf{#1}} -\definecolor{darkgreen}{rgb}{0,0.5,0} - -\usepackage{listings} -\lstset{language=Python, - basicstyle=\ttfamily\bfseries, - commentstyle=\color{red}\itshape, - stringstyle=\color{darkgreen}, - showstringspaces=false, - keywordstyle=\color{blue}\bfseries} - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -% Macros -\setbeamercolor{emphbar}{bg=blue!20, fg=black} -\newcommand{\emphbar}[1] -{\begin{beamercolorbox}[rounded=true]{emphbar} - {#1} - \end{beamercolorbox} -} -\newcounter{time} -\setcounter{time}{0} -\newcommand{\inctime}[1]{\addtocounter{time}{#1}{\tiny \thetime\ m}} - -\newcommand{\typ}[1]{\lstinline{#1}} - -\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}} } - -% Title page -\title{Your Title Here} - -\author[FOSSEE] {FOSSEE} - -\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay} +\title{Manipulating strings} +\author{FOSSEE} \date{} -% DOCUMENT STARTS +\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent} \begin{document} +\maketitle + + + + + + + + + \begin{frame} - \maketitle +\frametitle{Outline} +\label{sec-1} + +\begin{itemize} +\item Slicing strings to get sub-strings +\item Reversing strings +\item Replacing characters in strings. +\item Converting strings to upper or lower case +\item Joining a list of strings +\end{itemize} \end{frame} +\begin{frame} +\frametitle{Question 1} +\label{sec-2} + Obtain the sub-string excluding the first and last characters from + the string \texttt{s}. +\end{frame} \begin{frame}[fragile] - \frametitle{Outline} - \begin{itemize} - \item - \end{itemize} +\frametitle{Solution 1} +\label{sec-3} + +\lstset{language=Python} +\begin{lstlisting} +In []: s[1:-1] +\end{lstlisting} \end{frame} +\begin{frame} +\frametitle{Question 2} +\label{sec-4} + + Given a list week, week = \texttt{week = ["sun", "mon", "tue", "wed", "thu", "fri", "sat"]}. Check if \texttt{s} is a valid name of a day of the + week. Change the solution to this problem, to include forms like, + SAT, SATURDAY, Saturday and Sat. +\end{frame} +\begin{frame}[fragile] +\frametitle{Solution 2} +\label{sec-5} -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% All other slides here. %% -%% The same slides will be used in a classroom setting. %% -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +\lstset{language=Python} +\begin{lstlisting} +In []: s in week +In []: s.lower()[:3] in week +\end{lstlisting} +\end{frame} +\begin{frame} +\frametitle{Question 3} +\label{sec-6} + Given \texttt{email} -- \texttt{info@fossee[dot]in} + + Replace the \texttt{[dot]} with \texttt{.} in \texttt{email} +\end{frame} \begin{frame}[fragile] - \frametitle{Summary} - \begin{itemize} - \item - \end{itemize} +\frametitle{Solution 3} +\label{sec-7} + +\lstset{language=Python} +\begin{lstlisting} +email.replace('[dot], '.') +print email +\end{lstlisting} +\end{frame} +\begin{frame} +\frametitle{Question 4} +\label{sec-8} + + From the \texttt{email\_str} that we generated, change the separator to be a + semicolon instead of a comma. \end{frame} +\begin{frame}[fragile] +\frametitle{Solution 4} +\label{sec-9} +\lstset{language=Python} +\begin{lstlisting} +email_str = email_str.replace(",", ";") +\end{lstlisting} +\end{frame} \begin{frame} - \frametitle{Thank you!} +\frametitle{Summary} +\label{sec-10} + + You should now be able to -- +\begin{itemize} +\item Slice strings and get sub-strings out of them +\item Reverse strings +\item Replace characters in strings. +\item Convert strings to upper or lower case +\item Join a list of strings +\end{itemize} +\end{frame} +\begin{frame} +\frametitle{Thank you!} +\label{sec-11} + \begin{block}{} \begin{center} This spoken tutorial has been produced by the