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NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Numerical Methods in Materials Science andEngineering
First Day
Matthew [email protected]
Materials Science and EngineeringUniversity of Arizona
August 24, 2009
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Welcome to MSE 350
I I am not Dr. Erdmann! He is out for the week.
I Watch the NASA launch (http://countdown.ksc.nasa.gov/shuttle/countdown/cdt/)
I Laptop use in class is encouraged! (for programmingrelated . . . )
I There is no assumption of previous programmingexperience . . .
I Prereqs: Vector and Diff-Eq.
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Today
I This presentation:http://u.arizona.edu/~mgoodman/
I Class site:http://www.u.arizona.edu/~erdmann/mse350/
I Plagiarism Videohttp://deanofstudents.arizona.edu/
I Class overview
I HW for Wednesday
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Academic Integrity “video”
Just don’t do it!
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
What is Python?
Python is a general-purpose high-level programminglanguage. Its design philosophy emphasizes code readability.Python claims to “[combine] remarkable power with veryclear syntax”, and its standard library is large andcomprehensive. Its use of indentation as block delimiters isunusual among popular programming languages.[wik, ]
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Why Python?
I Modern
I Modular
I Concise
I Powerful
I Interactive
I Cross Platform
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Why Python? – Modern
I First Release in 1991!
I Under heavy active development
I Used by a number of giants:
I YouTube, Google, BitTorrent
I Yahoo!, CERN, NASA, OLPC
I Most Linux/Unix
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Why Python? – ModernFrom xkcd.com[xkc, ]
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Why Python? – Modern
Wow Development!
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Why Python? – Modular
Some standard modules:
I os – Dealing with the operating system and files
I wave – Working with sound files
I gzip, tarfile, zipfile – Working with compressed files
I urllib, webbrowser – Retrieving web pages andinteracting with the local web browser
I sqllite, tables, csv – Specialized database and data fileformats.
I email, pidgin – Interface to email and chat clients.
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Why Python? – Modular
Unique problems in programming are RARE.
I Reinventing the wheel == bad!
I Python modules offer engineered solutions to commontasks.
I This class will focus on several modules well suited toengineering and science related endeavors:
I Numpy – Powerful array operationsI Scipy – Scientific librariesI MatPlotLib – Plotting http:
//matplotlib.sourceforge.net/gallery.htmlI Mayavi – 3d visualization (demo) https://svn.
enthought.com/enthought/wiki/Mayavi/Gallery
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Why Python? – Modular
Modularity extends even to OTHER PROGRAMMINGLANGUAGES
I SWIG – Generates python interfaces to many languages(Java, C, C++, FORTRAN, Perl . . .)
I Cython – Creates C code out of Python
I PyCUDA – Interface to the NVIDIA CUDA GPUcomputing platform
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Why Python? – Concise
I Python was designed with readability in mind.
I Code is broken up with white-space
I More on this all later!
print “hello world”lunch options = “spam, eggs, and spam”if “spam” in lunch options: print “Yay spam!”
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Why Python? – PowerfulAll of the following things could be comfortablyaccomplished in less than 10 lines of code thanks to thewealth of modules available:
I Monitor an industrial process and send an email in caseof disruption.
I Connect to a remote database and perform a complexquery and display/save the results.
I Take the symbolic integral of a complex function.
I Visualize a 2d or 3d data set with interactive display
I Download a large number of files from a website on aautomatic schedule.
I Load an image, perform several filters and save it as adifferent format.
I Write an alarm clock with user specified wait time andmusic ramping.
I Make a chat-robot that harasses your friends.
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Why Python? – Interactive
Demo time!
I Interactive help
I Interactive programming
I Interactive HPC
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Why Python? – Cross Platform
I Supports all major operating systemsI LinuxI Windows (95, XP, Vista, 7?)I Mac OSX
I Portable code!
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
HW1: Get Python
Downloading and Installing the following is your homeworkfor the next class:
I python – the Python interpreter
I ipython – the interactive Python interpreter
I A text editor – 100+ options here . . .
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
HW1: Continued . . .
Also, we will need the following modules:
I numpy
I scipy
I matplotlib
I tables
I mayavi
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
HW1: Made Easy
You could track down all these individual installs and files,but it is much easier to download a bulk distribution thatincludes all of these tools:
I The Enthought Python Distribution (EPD) found athttp://www.enthought.com/. (all platforms)
I python(x,y) the “full” distribution found athttp://www.pythonxy.com/. (ia-64 not supported?)
I From the Linux apt repositories (ask me for a packagelist) (Debian/Ubuntu)
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Completing HW1
The final three steps:
1. Download the python script found here(http://www.u.arizona.edu/~mgoodman/)
2. Run it
3. Send a screen shot of everything working well to me [email protected]
4. Please include your full name, and a“secret-name/moniker” under which grades will beposted (if you don’t choose one, I will and you probablywont like it)
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Working Configuration
This is good:
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Lastly . . .
I If you have any trouble . . .
I Please also begin reading the first three sections of thepython tutorial found at:
I http://docs.python.org/tutorial/
I We will have covered all of that material by the end ofWednesday if all goes well.
NumericalMethods in
Materials Scienceand Engineering
MatthewGoodman
MSE 350 - Python
Acedemic Integrity
Python Overview
Why Python?
Homework
Bibliography
Bibliography I
Wikipedia, the free encyclopedia.http://www.wikipedia.org.
Xkcd, a webcomic of romance, sarcasm, math, andlanguage.http://www.xkcd.com.