diff options
Diffstat (limited to 'getting-started-with-lists')
| -rw-r--r-- | getting-started-with-lists/quickref.tex | 19 | ||||
| -rw-r--r-- | getting-started-with-lists/script.rst | 242 | ||||
| -rw-r--r-- | getting-started-with-lists/script.rst.orig | 224 | ||||
| -rw-r--r-- | getting-started-with-lists/slides.org | 100 | ||||
| -rw-r--r-- | getting-started-with-lists/slides.tex | 149 |
5 files changed, 0 insertions, 734 deletions
diff --git a/getting-started-with-lists/quickref.tex b/getting-started-with-lists/quickref.tex deleted file mode 100644 index bfe61ef..0000000 --- a/getting-started-with-lists/quickref.tex +++ /dev/null @@ -1,19 +0,0 @@ -Creating an list\\ -{\ex \lstinline| empty=[]|} - -Create a filled list\\ -{\ex \lstinline| nonempty = ['spam', 'eggs', 100, 1.234] |} - -Accessing a list\\ -{\ex \lstinline| nonempty[0] |} -{\ex \lstinline| nonempty[-1] |} - -Length of a list\\ -{\ex \lstinline| len(nonempty) |} - -Append an element to a list\\ -{\ex \lstinline| nonempty.append('python') |} - -Remove elements of a list\\ -{\ex \lstinline| del(nonempty[1] |} -{\ex \lstinline| nonempty.remove(100) |} diff --git a/getting-started-with-lists/script.rst b/getting-started-with-lists/script.rst deleted file mode 100644 index 5a084f9..0000000 --- a/getting-started-with-lists/script.rst +++ /dev/null @@ -1,242 +0,0 @@ -.. Objectives -.. ---------- - -.. By the end of this tutorial, you will be able to - -.. Create Lists. -.. Access List elements. -.. Append elemets to list -.. Delete list elemets - -.. 1. getting started with ipython - - - -.. Prerequisites -.. ------------- - -.. 1. getting started with strings -.. #. getting started with lists -.. #. basic datatypes - -.. Author : Amit - Internal Reviewer : Anoop Jacob Thomas <anoop@fossee.in> - External Reviewer : - Language Reviewer : Bhanukiran - Checklist OK? : <12-11-2010, Anand, OK> [2010-10-05] - -.. #[[Anoop: Slides contain only outline and summary - -Script ------- - {{{ Show the slide containing title }}} - -Hello friends and welcome to the tutorial on getting started with -lists. - - {{{ Show the slide containing the outline slide }}} - -In this tutorial we will be getting acquainted with a python data -structure called lists. We will learn :: - - * How to create lists - * Structure of lists - * Access list elements - * Append elements to lists - * Delete elements from lists - -List is a compound data type, it can contain data of mutually -different datatypes. List is also a sequence data type, all the -elements are arranged in a given order. - -.. #[[Anoop: "all the elements are in order and **there** order has a - meaning." - I guess something is wrong here, I am not able to - follow this.]] - -We will first create an empty list with no elements. On your IPython -shell type :: - - empty = [] - type(empty) - - -This is an empty list without any elements. - -.. #[[Anoop: the document has to be continous, without any - subheadings, removing * Filled lists]] - -Lets now see how to define a non-empty list. We do it as,:: - - nonempty = ['spam', 'eggs', 100, 1.234] - -Thus the simplest way of creating a list is typing out a sequence -of comma-separated values (or items) between two square brackets. - -As we can see lists can contain different kinds of data. In the -previous example 'spam' and 'eggs' are strings whereas 100 and 1.234 are -integer and float respectively. Thus we can put elements of different types in -lists including lists itself. This property makes lists heterogeneous -data structures. - -.. #[[Anoop: the sentence "Thus list themselves can be one of the - element types possible in lists" is not clear, rephrase it.]] - -Example :: - - listinlist=[[4,2,3,4],'and', 1, 2, 3, 4] - -We access an element of a list using its corresponding index. Index of -the first element of a list is 0. So for the list nonempty, nonempty[0] -gives the first element, nonempty[1] the second element and so on and -nonempty[3] the last element. :: - - nonempty[0] - nonempty[1] - nonempty[3] - -Following is an exercise that you must do. - -%% %% What happens when you do nonempty[-1]. - -Please, pause the video here. Do the exercise and then continue. - -.. #[[Anoop: was negative indices introduced earlier, if not may be we - can ask them to try out nonempty[-1] and see what happens and then - tell that it gives the last element in the list.]] - -As you can see you get the last element which is 1.234. - - -In python negative indices are used to access elements from the end:: - - nonempty[-1] - nonempty[-2] - nonempty[-4] - --1 gives the last element which is the 4th element , -2 second to last -and -4 gives the fourth from the last which, in this case, is the first element. - -We can append elements to the end of a list using the method append. :: - - nonempty.append('onemore') - nonempty - nonempty.append(6) - nonempty - -Following are exercises that you must do. - -%% %% What is the syntax to get the element 'and' -in the list,listinlist ? - - -%% %% How would you get 'and' using negative indices? - -Please, pause the video here. Do the exercise and then continue. - -The solution is on your screen - - -As we can see nonempty is appended with 'onemore' and 6 at the end. - -Using len function we can check the number of elements in the list -nonempty. In this case it is 6 :: - - len(nonempty) - - - -Just like we can append elements to a list we can also remove them. -There are two ways of doing it. One is by using index. :: - - del(nonempty[1]) - - - -deletes the element at index 1, i.e the second element of the -list, 'eggs'. The other way is removing element by content. Lets say -one wishes to delete 100 from nonempty list the syntax of the command -would be - -.. #[[Anoop: let x = [1,2,1,3] - now x.remove(x[2]) - still x is [2,1,3] so that is not the way to remove - element by index, it removed first occurrence of 1(by - content) and not based on index, so make necessary - changes]] - -:: - - nonempty.remove(100) - -but what if there were two 100's. To check that lets do a small -experiment. :: - - nonempty.append('spam') - nonempty - nonempty.remove('spam') - nonempty - -If we check now we will see that the first occurence 'spam' is removed -and therefore `remove` removes the first occurence of the element in the sequence -and leaves others untouched. - -One should remember this that while del removes by index number, -`remove` removes on the basis of content being passed on. For instance -if :: - - k = [1,2,1,3] - del([k[2]) - -gives us [1,2,3]. :: - - k.remove(x[2]) - -will give us [2,1,3]. Since it deletes the first occurence of what is -returned by x[2] which is 1. - - - - - - - -.. #[[Anoop: does it have two spams or two pythons?]] - -.. #[[Anoop: there are no exercises/solved problems in this script, - add them]] - -Following are exercises that you must do. - -%% %% Remove the third element from the list, listinlist. - -%% %% Remove 'and' from the list, listinlist. - -Please, pause the video here. Do the exercise and then continue. - - - -{{{Slide for Summary }}} - - -In this tutorial we came across a sequence data type called lists. :: - - * We learned how to create lists. - * How to access lists. - * Append elements to list. - * Delete Element from list. - * And Checking list length. - - - -{{{ show Sponsored by Fossee Slide }}} - -This tutorial was created as a part of FOSSEE project. - -I hope you found this tutorial useful. - -Thank You - -.. - * Author : Amit Sethi - * First Reviewer : - * Second Reviewer : Nishanth diff --git a/getting-started-with-lists/script.rst.orig b/getting-started-with-lists/script.rst.orig deleted file mode 100644 index 3f068eb..0000000 --- a/getting-started-with-lists/script.rst.orig +++ /dev/null @@ -1,224 +0,0 @@ -.. Objectives -.. ---------- - -.. By the end of this tutorial, you will be able to - -.. Create Lists. -.. Access List elements. -.. Append elemets to list -.. Delete list elemets - -.. 1. getting started with ipython - - - -.. Prerequisites -.. ------------- - -.. 1. getting started with strings -.. #. getting started with lists -.. #. basic datatypes - -.. Author : Amit - Internal Reviewer : Anoop Jacob Thomas <anoop@fossee.in> - External Reviewer : - Checklist OK? : <put date stamp here, if OK> [2010-10-05] - -.. #[[Anoop: Slides contain only outline and summary - -Script ------- - {{{ Show the slide containing title }}} - -Hello friends and welcome to the tutorial on getting started with -lists. - - {{{ Show the slide containing the outline slide }}} - -In this tutorial we will be getting acquainted with a python data -structure called lists. We will learn :: - - * How to create lists - * Structure of lists - * Access list elements - * Append elements to lists - * Delete elements from lists - -List is a compound data type, it can contain data of other data -types. List is also a sequence data type, all the elements are in -order and the order has a meaning. - -.. #[[Anoop: "all the elements are in order and **there** order has a - meaning." - I guess something is wrong here, I am not able to - follow this.]] - -We will first create an empty list with no elements. On your IPython -shell type :: - - empty = [] - type(empty) - - -This is an empty list without any elements. - -.. #[[Anoop: the document has to be continous, without any - subheadings, removing * Filled lists]] - -Lets now see how to define a non-empty list. We do it as,:: - - nonempty = ['spam', 'eggs', 100, 1.234] - -Thus the simplest way of creating a list is typing out a sequence -of comma-separated values (items) between square brackets. -All the list items need not be of the same data type. - -As we can see lists can contain different kinds of data. In the -previous example 'spam' and 'eggs' are strings and 100 and 1.234 are -integer and float. Thus we can put elements of heterogenous types in -lists including list itself. - -.. #[[Anoop: the sentence "Thus list themselves can be one of the - element types possible in lists" is not clear, rephrase it.]] - -Example :: - - listinlist=[[4,2,3,4],'and', 1, 2, 3, 4] - -We access list elements using the index. The index begins from 0. So -for list nonempty, nonempty[0] gives the first element, nonempty[1] -the second element and so on and nonempty[3] the last element. :: - - nonempty[0] - nonempty[1] - nonempty[3] - -Following is an exercise that you must do. - -%% %% What happens when you do nonempty[-1]. - -Please, pause the video here. Do the exercise and then continue. - -.. #[[Anoop: was negative indices introduced earlier, if not may be we - can ask them to try out nonempty[-1] and see what happens and then - tell that it gives the last element in the list.]] - -As you can see you get the last element which is 1.234. - - -In python negative indices are used to access elements from the end:: - - nonempty[-1] - nonempty[-2] - nonempty[-4] - --1 gives the last element which is the 4th element , -2 second to last -and -4 gives the fourth from last element which is first element. - -We can append elements to the end of a list using append command. :: - - nonempty.append('onemore') - nonempty - nonempty.append(6) - nonempty - -Following are exercises that you must do. - -%% %% What is the syntax to get the element 'and' -in the list,listinlist ? - - -%% %% How would you get 'and' using negative indices? - -Please, pause the video here. Do the exercise and then continue. - -The solution is on your screen - - -As we can see non empty appends 'onemore' and 6 at the end. - -Using len function we can check the number of elements in the list -nonempty. In this case it 6 :: - - len(nonempty) - - - -Just like we can append elements to a list we can also remove them. -There are two ways of doing it. One is by using index. :: - - del(nonempty[1]) - - - -deletes the element at index 1, 'eggs' which is the second element of -the list. The other way is removing element by content. Lets say one -wishes to delete 100 from nonempty list the syntax of the command -should be - -.. #[[Anoop: let x = [1,2,1,3] - now x.remove(x[2]) - still x is [2,1,3] so that is not the way to remove - element by index, it removed first occurrence of 1(by - content) and not based on index, so make necessary - changes]] - -:: - - nonempty.remove(100) - -but what if there were two 100's. To check that lets do a small -experiment. :: - - nonempty.append('spam') - nonempty - nonempty.remove('spam') - nonempty - -If we check now we will see that the first occurence 'spam' is removed -thus remove removes the first occurence of the element in the sequence -and leaves others untouched. - - - - - -.. #[[Anoop: does it have two spams or two pythons?]] - -.. #[[Anoop: there are no exercises/solved problems in this script, - add them]] - -Following are exercises that you must do. - -%% %% Remove the third element from the list, listinlist. - -%% %% Remove 'and' from the list, listinlist. - -Please, pause the video here. Do the exercise and then continue. - - - -{{{Slide for Summary }}} - - -In this tutorial we came across a sequence data type called lists. :: - - * We learned how to create lists. - * How to access lists. - * Append elements to list. - * Delete Element from list. - * And Checking list length. - - - -{{{ show Sponsored by Fossee Slide }}} - -This tutorial was created as a part of FOSSEE project. - -I hope you found this tutorial useful. - -Thank You - -.. - * Author : Amit Sethi - * First Reviewer : - * Second Reviewer : Nishanth diff --git a/getting-started-with-lists/slides.org b/getting-started-with-lists/slides.org deleted file mode 100644 index f7cb690..0000000 --- a/getting-started-with-lists/slides.org +++ /dev/null @@ -1,100 +0,0 @@ -#+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: Getting started with Lists -#+AUTHOR: FOSSEE -#+DATE: 2010-09-14 Tue -#+EMAIL: info@fossee.in - -#+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 - - How to create lists - - Structure of lists - - Access list elements - - Append elements to lists - - Deleting elements from lists - - -* Question 1 - - What happens when you do nonempty[-1]. - -* Solution 1 - - It gives the last element , 1.234 - -* Questions - - What is the syntax to get the element 'and' -in the list,listinlist ? - - - - How would you get 'and' using negative indices? - -* Solutions -#+begin_src python - - listinlist[1] - listinlist[-5] - -#+end_src python -* Questions - - - Remove the third element from the list, listinlist. - - - Remove 'and' from the list, listinlist. - -* Solutions -#+begin_src python - - del(listinlist[2]) - listinlist.remove('and') - -#+end_src python -* Summary -#+begin_src python - - l=[1,2,3,4] - l[-1] - l.append(5) - del(l[2]) - l.remove(2) - len(l) - -#+end_src python -* 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 --git a/getting-started-with-lists/slides.tex b/getting-started-with-lists/slides.tex deleted file mode 100644 index 42c6f0a..0000000 --- a/getting-started-with-lists/slides.tex +++ /dev/null @@ -1,149 +0,0 @@ -% Created 2010-11-10 Wed 12:22 -\documentclass[presentation]{beamer} -\usepackage[latin1]{inputenc} -\usepackage[T1]{fontenc} -\usepackage{fixltx2e} -\usepackage{graphicx} -\usepackage{longtable} -\usepackage{float} -\usepackage{wrapfig} -\usepackage{soul} -\usepackage{t1enc} -\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}} - -\title{Getting started with Lists} -\author{FOSSEE} -\date{2010-09-14 Tue} - -\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent} -\begin{document} - -\maketitle - - - - - - - - - - -\begin{frame} -\frametitle{Outline} -\label{sec-1} - -\begin{itemize} -\item How to create lists -\item Structure of lists -\item Access list elements -\item Append elements to lists -\item Deleting elements from lists -\end{itemize} -\end{frame} -\begin{frame} -\frametitle{Question 1} -\label{sec-2} - -\begin{itemize} -\item What happens when you do nonempty[-1]. -\end{itemize} -\end{frame} -\begin{frame} -\frametitle{Solution 1} -\label{sec-3} - -\begin{itemize} -\item It gives the last element , 1.234 -\end{itemize} -\end{frame} -\begin{frame} -\frametitle{Questions} -\label{sec-4} - -\begin{itemize} -\item What is the syntax to get the element `and' -\end{itemize} - -in the list,listinlist ? - - -\begin{itemize} -\item How would you get `and' using negative indices? -\end{itemize} -\end{frame} -\begin{frame}[fragile] -\frametitle{Solutions} -\label{sec-5} - -\begin{verbatim} - -listinlist[1] -listinlist[-5] -\end{verbatim} -\end{frame} -\begin{frame} -\frametitle{Questions} -\label{sec-6} - - -\begin{itemize} -\item Remove the third element from the list, listinlist. -\item Remove `and' from the list, listinlist. -\end{itemize} -\end{frame} -\begin{frame}[fragile] -\frametitle{Solutions} -\label{sec-7} - -\begin{verbatim} - -del(listinlist[2]) -listinlist.remove('and') -\end{verbatim} -\end{frame} -\begin{frame}[fragile] -\frametitle{Summary} -\label{sec-8} - -\begin{verbatim} - -l=[1,2,3,4] -l[-1] -l.append(5) -del(l[2]) -l.remove(2) -len(l) -\end{verbatim} -\end{frame} -\begin{frame} -\frametitle{Thank you!} -\label{sec-9} - - \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{frame} - -\end{document} |