--- a/using_sage_to_teach.rst Mon Oct 11 22:44:21 2010 +0530
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,48 +0,0 @@
-Hello friends and welcome to the tutorial on "How to use SAGE for teaching"
-
-{{{ Show the slide containing title }}}
-
-{{{ Show the slide containing the outline slide }}}
-
-In this tutorial, we shall learn
-
- * How to use SAGE for 2D and 3D plotting
- * How to use interactive features of SAGE for better demonstration
- * How to use SAGE worksheets for collaborative learning
- * How to use typesetting in sage for neater outputs
-
-2D
- * plot
- * parametric_plot
- * polygon
- * line
-3D
- * plot3d
- * parametric_plot3d
-{{{ Pause here and try out the following exercises }}}
-
-%% 2 %% change the label on y-axis to "y" and save the lines of code
- accordingly
-
-{{{ continue from paused state }}}
-
-{{{ Show summary slide }}}
-
-This brings us to the end of the tutorial.
-we have learnt
-
- * how to use loadtxt to read files
- * how to generate a least square fit
-
-{{{ Show the "sponsored by FOSSEE" slide }}}
-
-#[Nishanth]: Will add this line after all of us fix on one.
-This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
-
-Hope you have enjoyed and found it useful.
-Thankyou
-
-.. Author : Nishanth
- Internal Reviewer 1 :
- Internal Reviewer 2 :
- External Reviewer :
--- a/writing_python_scripts.rst Mon Oct 11 22:44:21 2010 +0530
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,136 +0,0 @@
-Hello friends and welcome to the tutorial on "Writing Python scripts"
-
-{{{ Show the slide containing title }}}
-
-{{{ Show the slide containing the outline slide }}}
-
-In this tutorial, we shall learn
-
- * How write Python scripts
-
-Often we will have to reuse the code that we haave written. We do that by
-writing functions. Functions are bundled into packages and are imported as and
-required in the script.
-
-Let us first write a function that computes the gcd of two numbers and save it
-in a script.
-
-{{{ Open an editor and start typing out the following code }}}
-::
-
- def gcd(a, b):
-
- while b:
- a, b = b, a%b
-
- return a
-
-We shall write an test function in the script that tests the gcd function every
-time the script is run.
-
-{{{ Add to the script }}}
-
-::
-
- if gcd(40, 12) == 4:
- print "Everything OK"
- else:
- print "The GCD function is wrong"
-
-Let us save the file as script.py in /home/fossee/gcd_script.py
-
-We shall run the script by doing
-::
-
- $ python /home/fossee/gcd_script.py
-
-We can see that the script is executed and everything is fine.
-
-What if we want to use the gcd function in some of our later scripts. This
-is also possible since every python file can be used as a module.
-
-But first, we shall understand what happens when you import a module.
-
-Open IPython and type
-::
-
- import sys
- sys.path
-
-This is a list of locations where python searches for a module when it
-encounters an import statement.
-
-hence when we just did =import sys=, python searches for a file named sys.py or
-a folder named sys in all these locations one by one, until it finds one.
-
-We can place our script in any one of these locations and can import it.
-
-The first item in the list is an empty string which means the current working
-directory is also searched.
-
-Alternatively, we can also import the module if we are working in same
-directory where the script exists.
-
-Since we are in /home/fossee, we can simply do
-::
-
- import gcd_script
-
-We can see that the gcd_script is imported. But the test code that we added at
-the end of the file is also executed.
-
-But we want the test code to be executed only when the file is run as a python
-script and not when it is imported.
-
-This is possible by using =__name__= variable.
-
-First we shall look at how to use the idiom and then understand how it works.
-
-Go to the file and add
-::
-
- if __name__ == "__main__":
-
-before the test code and indent the test code.
-
-Let us first run the code.
-::
-
- $ python gcd_script.py
-
-We can see that the test runs successfully.
-
-Now we shall import the file
-::
-
- import gcd_script
-
-We see that now the test code is not executed.
-
-The __name__ variable is local to every module and it is equal to __main__ only
-when the file is run as a script.
-
-hence all the code that goes after __name__ == "__main__" is executed only when
-the file is run as a python script.
-
-{{{ Show summary slide }}}
-
-This brings us to the end of the tutorial.
-we have learnt
-
- * What happens when we import a module
- * How to use a script as a module
- * How to write test functions using the __name__ idiom
-
-{{{ Show the "sponsored by FOSSEE" slide }}}
-
-#[Nishanth]: Will add this line after all of us fix on one.
-This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
-
-Hope you have enjoyed and found it useful.
-Thankyou
-
-.. Author : Nishanth
- Internal Reviewer 1 :
- Internal Reviewer 2 :
- External Reviewer :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/writing_python_scripts/questions.rst Mon Oct 11 22:44:55 2010 +0530
@@ -0,0 +1,90 @@
+Objective Questions
+-------------------
+
+ 1. If ``a = [1, 1, 2, 3, 3, 5, 5, 8]``. What is set(a)
+
+ a. set([1, 1, 2, 3, 3, 5, 5, 8])
+ #. set([1, 2, 3, 5, 8])
+ #. set([1, 2, 3, 3, 5, 5])
+ #. Error
+
+ Answer: set([1, 2, 3, 5, 8])
+
+ 2. ``a = set([1, 3, 5])``. How do you find the length of a?
+
+ Answer: len(a)
+
+ 3. ``a = set([1, 3, 5])``. What does a[2] produce?
+
+ a. 1
+ #. 3
+ #. 5
+ #. Error
+
+ Answer: Error
+
+ 4. ``odd = set([1, 3, 5, 7, 9])`` and ``squares = set([1, 4, 9, 16])``. What
+ is the value of ``odd | squares``?
+
+ Answer: set([1, 3, 4, 5, 7, 9, 16])
+
+ 5. ``odd = set([1, 3, 5, 7, 9])`` and ``squares = set([1, 4, 9, 16])``. What
+ is the value of ``odd - squares``?
+
+ Answer: set([3, 5, 7])
+
+ 6. ``odd = set([1, 3, 5, 7, 9])`` and ``squares = set([1, 4, 9, 16])``. What
+ is the value of ``odd ^ squares``?
+
+ Answer: set([3, 4, 5, 7, 16])
+
+ 7. ``odd = set([1, 3, 5, 7, 9])`` and ``squares = set([1, 4, 9, 16])``. What
+ does ``odd * squares`` give?
+
+ a. set([1, 12, 45, 112, 9])
+ #. set([1, 3, 4, 5, 7, 9, 16])
+ #. set([])
+ #. Error
+
+ Answer: Error
+
+ 8. ``a = set([1, 2, 3, 4])`` and ``b = set([5, 6, 7, 8])``. What is ``a + b``
+
+ a. set([1, 2, 3, 4, 5, 6, 7, 8])
+ #. set([6, 8, 10, 12])
+ #. set([5, 12, 21, 32])
+ #. Error
+
+ 9. ``a`` is a set. how do you check if if a varaible ``b`` exists in ``a``?
+
+ Answer: b in a
+
+ 10. ``a`` and ``b`` are two sets. What is ``a ^ b == (a - b) | (b - a)``?
+
+ a. True
+ #. False
+
+ Answer: False
+
+
+Larger Questions
+----------------
+
+ 1. Given that mat_marks is a list of maths marks of a class. Find out the
+ no.of duplicates marks in the list.
+
+ Answer::
+
+ unique_marks = set(mat_marks)
+ no_of_duplicates = len(mat_marks) - len(unique_marks)
+
+ 2. Given that mat_marks is a list of maths marks of a class. Find how many
+ duplicates of each mark exist.
+
+ Answer::
+
+ marks_set = set(mat_marks)
+ for mark in marks_set:
+ occurences = mat_marks.count(mark)
+ print occurences - 1, "duplicates of", mark, "exist"
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/writing_python_scripts/quickref.tex Mon Oct 11 22:44:55 2010 +0530
@@ -0,0 +1,11 @@
+Creating a tuple:\\
+{\ex \lstinline| t = (1, "hello", 2.5)|}
+
+Accessing elements of tuples:\\
+{\ex \lstinline| t[index] Ex: t[2]|}
+
+Accessing slices of tuples:\\
+{\ex \lstinline| t[start:stop:step]|}
+
+Swapping values:\\
+{\ex \lstinline| a, b = b, a|}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/writing_python_scripts/script.rst Mon Oct 11 22:44:55 2010 +0530
@@ -0,0 +1,146 @@
+.. Objectives
+.. ----------
+
+.. Prerequisites
+.. -------------
+
+.. Author : Nishanth Amuluru
+ Internal Reviewer :
+ External Reviewer :
+ Checklist OK? : <put date stamp here, if OK> [2010-10-05]
+
+Script
+------
+
+Hello friends and welcome to the tutorial on "Writing Python scripts"
+
+{{{ Show the slide containing title }}}
+
+{{{ Show the slide containing the outline slide }}}
+
+In this tutorial, we shall learn
+
+ * How write Python scripts
+
+Often we will have to reuse the code that we haave written. We do that by
+writing functions. Functions are bundled into packages and are imported as and
+required in the script.
+
+Let us first write a function that computes the gcd of two numbers and save it
+in a script.
+
+{{{ Open an editor and start typing out the following code }}}
+::
+
+ def gcd(a, b):
+
+ while b:
+ a, b = b, a%b
+
+ return a
+
+We shall write an test function in the script that tests the gcd function every
+time the script is run.
+
+{{{ Add to the script }}}
+
+::
+
+ if gcd(40, 12) == 4:
+ print "Everything OK"
+ else:
+ print "The GCD function is wrong"
+
+Let us save the file as script.py in /home/fossee/gcd_script.py
+
+We shall run the script by doing
+::
+
+ $ python /home/fossee/gcd_script.py
+
+We can see that the script is executed and everything is fine.
+
+What if we want to use the gcd function in some of our later scripts. This
+is also possible since every python file can be used as a module.
+
+But first, we shall understand what happens when you import a module.
+
+Open IPython and type
+::
+
+ import sys
+ sys.path
+
+This is a list of locations where python searches for a module when it
+encounters an import statement.
+
+hence when we just did =import sys=, python searches for a file named sys.py or
+a folder named sys in all these locations one by one, until it finds one.
+
+We can place our script in any one of these locations and can import it.
+
+The first item in the list is an empty string which means the current working
+directory is also searched.
+
+Alternatively, we can also import the module if we are working in same
+directory where the script exists.
+
+Since we are in /home/fossee, we can simply do
+::
+
+ import gcd_script
+
+We can see that the gcd_script is imported. But the test code that we added at
+the end of the file is also executed.
+
+But we want the test code to be executed only when the file is run as a python
+script and not when it is imported.
+
+This is possible by using =__name__= variable.
+
+First we shall look at how to use the idiom and then understand how it works.
+
+Go to the file and add
+::
+
+ if __name__ == "__main__":
+
+before the test code and indent the test code.
+
+Let us first run the code.
+::
+
+ $ python gcd_script.py
+
+We can see that the test runs successfully.
+
+Now we shall import the file
+::
+
+ import gcd_script
+
+We see that now the test code is not executed.
+
+The __name__ variable is local to every module and it is equal to __main__ only
+when the file is run as a script.
+
+hence all the code that goes after __name__ == "__main__" is executed only when
+the file is run as a python script.
+
+{{{ Show summary slide }}}
+
+This brings us to the end of the tutorial.
+we have learnt
+
+ * What happens when we import a module
+ * How to use a script as a module
+ * How to write test functions using the __name__ idiom
+
+{{{ Show the "sponsored by FOSSEE" slide }}}
+
+#[Nishanth]: Will add this line after all of us fix on one.
+This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
+
+Hope you have enjoyed and found it useful.
+Thankyou
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/writing_python_scripts/slides.tex Mon Oct 11 22:44:55 2010 +0530
@@ -0,0 +1,104 @@
+% Created 2010-10-10 Sun 23:53
+\documentclass[presentation]{beamer}
+\usepackage[latin1]{inputenc}
+\usepackage[T1]{fontenc}
+\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}}
+
+\title{Sets}
+\author{FOSSEE}
+\date{}
+
+\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
+\begin{document}
+
+\maketitle
+
+
+
+
+
+
+
+
+
+\begin{frame}
+\frametitle{Outline}
+\label{sec-1}
+
+\begin{itemize}
+\item Defining Sets
+\item Operations on sets
+\end{itemize}
+\end{frame}
+\begin{frame}
+\frametitle{Question 1}
+\label{sec-2}
+
+ Given a list of marks, \texttt{marks = [20, 23, 22, 23, 20, 21, 23]} list
+ all the duplicates
+\end{frame}
+\begin{frame}[fragile]
+\frametitle{Solution 1}
+\label{sec-3}
+
+\lstset{language=Python}
+\begin{lstlisting}
+marks = [20, 23, 22, 23, 20, 21, 23]
+marks_set = set(marks)
+for mark in marks_set:
+ marks.remove(mark)
+
+# we are now left with only duplicates in the list marks
+duplicates = set(marks)
+\end{lstlisting}
+\end{frame}
+\begin{frame}
+\frametitle{Summary}
+\label{sec-4}
+
+ You should now be able to --
+\begin{itemize}
+\item make sets from lists
+\item input sets directly
+\item perform operations like union, intersection, symmetric difference
+\item check if a subset of another
+\item check containership, length and other properties similar to lists
+\end{itemize}
+\end{frame}
+\begin{frame}
+\frametitle{Thank you!}
+\label{sec-5}
+
+ \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}