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What is Python? (Silicon Valley CodeCamp 2015)

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Slide deck for the 45-60-minute introduction to Python session talk delivered at Silicon Valley CodeCamp 2015: https://www.siliconvalley-codecamp.com/Session/2015/what-is-python

ABSTRACT
Python is an agile object-oriented programming language that continues to build momentum. It can do everything Java, C/C++/C#, Ruby, PHP, and Perl can do, but it's also fun & intuitive! Enjoy coding as fast as you think with a simple yet robust syntax that encourages group collaboration. It is known for several popular web frameworks, including Django (Python's equivalent to Ruby on Rails), Pyramid, and web2py. There is also Google App Engine, where Python was the first supported runtime. Users supporting Zope, Plone, Trac, and Mailman will also benefit from knowing some Python. Python can do XML/ReST/XSLT, multithreading, SQL/databases, GUIs, hardcore math/science, Internet client/server systems & networking (heard of Twisted?), GIS/ESRI, QA/test, automation frameworks, plus system administration tasks too! On the education front, it's a great tool to teach programming with (especially those who have done Scratch or Tynker already) as well as a solid (first) language to learn for non-programmers and other technical staff. Finally, if Python doesn't do what you want, you can extend it in C/C++, Java, or C# (even VB.NET)! Have you noticed the huge growth in the number of jobs on Monster & Dice that list Python as a desired skill? Come find out why Google, Yahoo!, Disney, Cisco, YouTube, LinkedIn, Yelp, LucasFilm/ILM, Pixar, NASA, Ubuntu, Bank of America, and Red Hat all use Python!

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What is Python? (Silicon Valley CodeCamp 2015)

  1. 1. 1 (c) 1998-2015 CyberWeb Consulting. All rights reserved. What is Python? An Introduction "Perl is worse than Python because people wanted it worse." - Larry Wall (14 Oct 1998 15:46:10 -0700, Perl Users mailing list) "Life is better without braces." and "Python fits your brain." - Bruce Eckel, author of Thinking in C++ , Thinking in Java "Python is an excellent language [and makes] sensible compromises." - Peter Norvig (Google), author of Artificial Intelligence +Wesley Chun, Principal CyberWeb Consulting cyberwebconsulting.com (c) 1998-2015 CyberWeb Consulting. All rights reserved. Python is Fun! (I've used it at lots of places!)
  2. 2. 2 (c) 1998-2015 CyberWeb Consulting. All rights reserved. (c) 1998-2015 CyberWeb Consulting. All rights reserved. I'm here to give you an idea of what it is! (I've written a lot about it!)
  3. 3. 3 (c) 1998-2015 CyberWeb Consulting. All rights reserved. (c) 1998-2015 CyberWeb Consulting. All rights reserved. I've taught it at lots of places! (companies, schools, etc.)
  4. 4. 4 (c) 1998-2015 CyberWeb Consulting. All rights reserved. (c) 1998-2015 CyberWeb Consulting. All rights reserved. About You SW/HW Engineer/Lead Sys Admin/IS/IT/Ops Web/Flash Developer QA/Testing/Automation Scientist/Mathematician Toolsmith, Hobbyist Release Engineer/SCM Artist/Designer/UE/UI/UX Student/Teacher Familiar with… Java, C, C++, C# PHP, JavaScript (Visual) Basic Perl, Tcl, Ruby any other high- level language… Django, Pyramid, web2py, Flask, Fabric, Plone, Trac, Mailman, App Engine
  5. 5. 5 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Why are you here? You… Have heard good word-of-mouth Came via Django, App Engine, Plone, etc. Discovered Google, Yahoo!, et al. use it Already know but want formal training Were forced by your boss Safari Books Online: Top 5, Apr 2009 1. iPhone 2. Java 3. Python 4. C# 5. PHP (c) 1998-2015 CyberWeb Consulting. All rights reserved. source: TIOBE Programming Community Index for April 2009 (tiobe.com)
  6. 6. 6 (c) 1998-2015 CyberWeb Consulting. All rights reserved. For New Programmers Programming should be easy enough to teach like reading & writing (CP4E) What you need to be good Some math background Algebra, physics (problem solving) Buddy who already is a developer Even better if they know Python Tinkerer, curious, itch-scratcher (c) 1998-2015 CyberWeb Consulting. All rights reserved. About this Talk Goal: Introduce as much Python as one can in an hour Seminar Topics Language Introduction Python Object Types Loops and Conditionals Files, Functions, Modules Object-Oriented Programming Errors and Exception Handling Miscellaneous
  7. 7. 7 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Background Guido van Rossum: began late '89, released early '91 Inherits from ABC, Modula, C/C++, LISP, ALGOL, Perl, Java, etc. Named after Monty Python, not the snake Cross-platform (Mac, PC, *ix; only need a C compiler) Alternate implementations: Jython, IronPython, Stackless, PyPy, etc. Philosophy, Concepts and Syntax Robust Enough "batteries included" to get job done Simple Clean, easy-to-read, easier than VB?!? Modular Plug-n-play, use only what you need Extensible Can extend language to meet your needs Intuitive "Python fits your brain." OOP Object-oriented when you need it (not req'd) "Pythonic" "There's only one way to do it…." (c) 1998-2015 CyberWeb Consulting. All rights reserved. Disadvantages? Generally slower than compiled languages Obscure syntax? Naaah! Typing requires discipline Some idiosyncrasies and required idioms May not have your feature Memory management No marketing force… mostly word-of-mouth No world domination… yet! Why (not) Python? Advantages Simple syntax Rapid development High-level data structures Object-oriented Exception handling Functional programming Memory management Extensible (C/C++/Java) Many libraries: NW, DB, GUI, MT, XML/JSON/CSV, RE, OS/FS, Math, Web; plus 3rd-party Community www.tiobe.com/index.php/ content/paperinfo/tpci
  8. 8. 8 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Built for Non-Programmers Educational language syntax Scratch (Tynker, Blockly, App Inventor) , Alice, Python, HTML Works well for school-aged children Syntax, memory mgmt, data structures, OOP… Obstacles to learning concepts, deters interest Python: retention, morale, understanding Probably the "best" 1st language What about professional developers? C/C++, Java, PHP, Python, Ruby, JavaScript (c) 1998-2015 CyberWeb Consulting. All rights reserved. Some Newbie Resources Published Books Hello World! Computer Programming for Kids & Other Beginners (Sande, Sande: 2013) Invent Your Own Computer Games with Python (Sweigart: 2015) Python for Kids (Briggs: 2012; see Snake Wrangling for Kids) Automate the Boring Stuff with Python: Practical Programming for Total Beginners (Sweigart: 2015) Learning with Python: How to Think Like a Computer Scientist (Downey, Elkner, Meyers: 2002) Online Books, Tutorials, Environments, etc. How to Think Like a Computer Scientist (Downey, Elkner, Meyers) Learning to Program (Gauld) LiveWires Python course A Byte of Python (Swaroop) Instant Hacking: Learning to Program with Python (Hetland) Snake Wrangling for Kids (Briggs) Computer Programming is Fun! (Handy) Karel the Robot clones: Guido van Robot, RUR-PLE
  9. 9. 9 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Run Python interactive interpreter from default IDE: IDLE Or do it from the cmd-line or DOS command shell $ python # or C:> python Python 2.7.10 (default, Jul 27 2015, 11:35:10) [GCC 4.2.1 Compatible Apple LLVM 6.1.0 (clang-602.0.53)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> >>> print 'Hello World!' Hello World! Interactive Interpreter To exit: Ctrl-D in IDLE or *ix cmd line; or Ctrl-Z in DOS (c) 1998-2015 CyberWeb Consulting. All rights reserved. What You Just Saw >>> this is the Python prompt Enter any Python command after it Use print to display output to users Use print() in Python 3 To exit interactive interpreter Ctrl-D from IDLE or *ix command-line Ctrl-Z from a DOS/command shell Interactive Interpreter: testing, debugging, hacking, experimenting regardless of IDE use or otherwise
  10. 10. 10 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Getting Python POSIX (Mac OS, *nix): already installed PC, source, and other downloads python.org or corepython.com Other IDEs SPE (pictured) PythonWin Eclipse & PyDev PyCharm/intelliJ Komodo WingIDE IPython Notebook (c) 1998-2015 CyberWeb Consulting. All rights reserved. Online Python interpreters/shells • Can't or don't wish to install Python locally? • Run Python from just a web browser •ideone.com •colabv6.dan.co.jp/lleval.html •doc.pyschools.com/console •repl.it/languages/Python •skulpt.org (pure JS implementation; allows turtle) •pythonwebconsole.thomnichols.org •shell.appspot.com (Google App Engine + libraries) •codepad.org •lotrepls.appspot.com •datamech.com/devan/trypython/trypython.py • Most are 2.x, some (top pair) do 3.x • Some support multiple languages
  11. 11. 11 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Online learning systems •Learn & code Python with these learning environments •Codecademy •codecademy.com/tracks/python •PySchools •pyschools.com •Online Python Tutor •pythontutor.com •Online Python course •Udacity •udacity.com/course/cs101 •Coursera •coursera.org/course/interactivepython •coursera.org/course/programming1 •LearnPython.org •learnpython.org •CodingBat (login optional) •codingbat.com/python •SingPath (login required) •singpath.com (c) 1998-2015 CyberWeb Consulting. All rights reserved. Hello World! Using print statement or function print 'Hello World!' # 2.x print('Hello World!') # 3.x Or for 3.x compatibility & "futureproofing:" from __future__ import print_function # works in both 2.x and 3.x print('Hello World!')
  12. 12. 12 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Common Beginner Gotchas Code delimited by indentation not braces { } if x > 10: return "'x' is greater than 10" else: return "'x' is less than 10" No extraneous characters ( ; , $, ……) No switch-case, private class members, ++/--, static type checking, anonymous blocks, etc. Freaky-looking floats*: 1.1 1.10000000001 Single element tuple needs comma: (None,) 3.x-only: print() & true div: 1/2 == 0.5 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Variables and Expressions >>> 4 + 6 * 5 # math ops like other langs 34 >>> a = 4 + 6 ** 2 # no declaration needed >>> a 40 >>> a = 'Python' # auto garbage collection >>> b = 'is cool' >>> a + b # ops can be overloaded 'Pythonis cool' >>> a = a + ' ' + b # reassignment no problem >>> a 'Python is cool' >>> # useful interactive tool
  13. 13. 13 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Objects Standard Data Types Numbers (3-8) Strings (2-3) Lists Tuples Dictionaries Sets (2) Other Types None Files, Modules Functions/Methods Iterators/Generators Type/Classes miscellaneous Allocated on assignment: Dynamic/Duck Typing Memory Management: Reference Counting Variables not declared: type inferred on assignment (c) 1998-2015 CyberWeb Consulting. All rights reserved. Standard Operators + - * / // % ** << >> & | ^ ~ == >= <= < > != is is not and or not •Grouping expressions in ( ) okay as usual •** means exponentiation, % means modulus/remainder •/ means true division in 3.x and classic division in 2.x •Use // for standard integer floor division •Assignment using single equals ( = ) •Augmented assignment +=, -=, *=, etc. (no ++ though)
  14. 14. 14 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Numbers integers (no size limit except for VM) -680, 0o237, 0xDEADBEEF, 64-0x41, 0b110 floating point real numbers (IEEE-754 C double) -97.65, -3.14159, -6e2, 0.1 complex numbers Composed of real and imaginary parts (floats) 11.65-5.55J, 4J, -3e2+8.73J, 0.1-2.3e4J Also long, bool, Decimal, Fraction, Rational, etc. Other modules: math, cmath, random, operator (c) 1998-2015 CyberWeb Consulting. All rights reserved. Strings ' ' " " ''' ''' Strings are sequences of characters (single/double quotes) No 'char' type… strings of length 1 Format operator ( % ) for printf()-like functionality Flexible alternative: string format() method (new in 2.6) Triple quotes allow special characters like newlines >>> x = 'Python' >>> x * 2 'PythonPython' >>> x *= 2 >>> x 'PythonPython' >>> x[-1] 'n' >>> x[-4:-1] 'tho' >>> 'ton' in x False >>> '%s is number %d' % (x[:6], 1) 'Python is number 1' >>> '{0} is #{1}'.format(x[:6], 1) 'Python is #1' >>> >>> hi = '''hi there''' >>> hi 'hinthere' >>> print(hi) hi there
  15. 15. 15 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Lists [ ] and Tuples ( ) Lists: ordered sequences of arbitrary objects Mutable (values can be updated) Can have lists of lists, i.e., multidimensional indexing Tuples similar but immutable (no value updates allowed) "List comprehensions" allows for quick logical building of lists Common list methods: list.sort() # "sort" list contents in-place list.reverse() # reverse a list in-place list.append() # append item to list list.insert() # insert items in list list.remove/pop() # remove item(s) from list list.extend() # extend a list with another one list.count() # return number of item occurrences list.index() # lowest index where item is found (c) 1998-2015 CyberWeb Consulting. All rights reserved. List Operations >>> m = ['Core', 'Programming', 9, 2006] >>> m.append('Prentice Hall') >>> m.insert(1, 'Pytho') >>> m ['Core', 'Pytho', 'Programming', 9, 2006, 'Prentice Hall'] >>> m[1] = 'Python' >>> m.pop(3) 9 >>> m ['Core', 'Python', 'Programming', 2006, 'Prentice Hall'] >>> m.sort() >>> m [2006, 'Core', 'Prentice Hall', 'Programming', 'Python'] >>> [i*3 for i in range(20) if i % 2 == 0] [0, 6, 12, 18, 24, 30, 36, 42, 48, 54] >>> f = open('myFile', 'r') >>> data = [line.strip() for line in f] >>> f.close()
  16. 16. 16 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Dictionaries { } Dictionaries (sets like dicts but only hashed keys) Mutable, resizable hash tables Mappings of keys to values Keys: scalar (usually strings or numbers) Values: arbitrary Python objects No key collisions allowed Similar to Java HashMap, JS Object, Perl hash/associative array Most commonly-used methods: d.items() # iterable: key-value pairs d.get() # return key's value (or default) d.setdefault() # return key's value, set if nec. d.pop() # remove item from d and return d.update() # merge contents from another dict (c) 1998-2015 CyberWeb Consulting. All rights reserved. Dictionary Operations >>> d = {'title': 'Core Python Programming', 'year': 2006} >>> d {'year': 2006, 'title': 'Core Python Programming'} >>> 'year' in d True >>> 'pub' in d False >>> d.get('pub', 'N/A') # KeyError if d['pub'] 'N/A' >>> d['pub'] = 'Prentice Hall' >>> d.get('pub', 'N/A') # no KeyError for d['pub'] now 'Prentice Hall' >>> for eachKey in d: print(eachKey, ':', d[eachKey]) year : 2006 pub : Prentice Hall title : Core Python Programming
  17. 17. 17 (c) 1998-2015 CyberWeb Consulting. All rights reserved. if-elif-else Statements Conditional statements are what you expect # prompt, get, and check user input data = raw_input("Enter 'y' or 'n': ") if data[0] == 'y': print("You typed 'y'.") # 'y' key elif data[0] == 'n': print("You typed 'n'.") # 'n' key else: print('invalid key!') # other key Ternary Operator (aka Conditional Expressions: C ? T : F) smaller = x if x < y else y # T if C else F (c) 1998-2015 CyberWeb Consulting. All rights reserved. Loops Python while loops are same as in other languages for more like shell foreach & used ~90% over while Iterate over elements rather than counting/conditional range() helps "simulate" traditional for loops Loop "friends" break & continue also here aList = [123, 'xyz', 45.67] >>> for eachItem in aList: ... print(eachItem) 123 xyz 45.67 >>> for i in range(0, 3, 1): # think "for (i=0; i<3; i+=1)" ... print(i) 0 1 2 >>> i = 0 >>> while i < 3: ... print(i) ... i += 1 0 1 2
  18. 18. 18 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Open a file and get back a file object f = open(name, mode) # mode: r/r+, w, a, U Most commonly-used file methods f.close() Close file f.read() Read bytes from file f.write() Write a string to file Display text file example: f = open('data.txt', 'r') for line in f: print(line.rstrip()) f.close() … or, alternatively, more modern Python (2.6+) with open('data.txt', 'r') as f: for line in f: print(line, end='') Files (c) 1998-2015 CyberWeb Consulting. All rights reserved. Function declaration syntax and example def func_name([v1,…, vN=dv,… *args, **kwargs): "documentation string" function_body def addYor10(x, y=10): # 'y' has default value "adds 'x' and 'y'; latter defaults to 10" return x + y Functions heterogenous (untyped) Default values & variable arguments supported Can return 0, 1, or more objects Python returns None if no return value provided Introducing Functions
  19. 19. 19 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Importing Modules & Attributes Importing modules or packages using import statement import module_name import string num = string.atoi('123') Importing module attributes using from-import statement Names brought into (global) variable namespace from module_name import module_element from string import atoi num = atoi('123') Packages: allow for organizing modules using the file system Use int()though… (c) 1998-2015 CyberWeb Consulting. All rights reserved. Standard Library Sampler (“B.I.”) API for SQLite databasessqlite3 Email processingemail, {smtp,pop,imap}lib External process managementsubprocess Data compression and archive filesgzip, bz2, zipfile, tarfile Various Internet client libraries{ftp,url,http,*}lib Serialize Python objectspickle, cPickle, shelve Various math/numberic processing{c,}math, random, fractions,…… High-level threads/multiprocess APIsthreading, multiprocessing Python/Tk GUI toolkit interfaceTkinter Socket interface & server classes (TCP, UDP)socket, SocketServer Date and time constants and functionstime, datetime, calendar Text processingre, csv, json, xml Operating and file system interfaceos and os.path System data, processing, and functionalitysys DescriptionModule Name(s)
  20. 20. 20 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Programmer Tools Debugger pdb Profilers profile hotshot cProfile Tracer/Tracker trace Logger logging Timer timeit Help/Documentation pydoc Testing unittest doctest (external) nose (external) py.test Testing tools taxonomy goo.gl/Fpz0Z (c) 1998-2015 CyberWeb Consulting. All rights reserved. Object-Oriented Programming "Constructor"/Initializer is __init__(), "self" is "this" Class instantiation via function interface (rather than "new") Instance attrs, multiple inheritance; no overloading nor private class MyClass(object): ... def __init__(self, data=2): ... self.info = data ... def times(self, x): ... return "%d * %d is %d" % ( ... self.info, x, self.info * x) >>> >>> inst = MyClass(21) >>> inst.info 21 >>> print inst.times(3) 21 * 3 is 63
  21. 21. 21 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Exceptions and try-except Exception handling via try-except statement try: # statements to monitor except ExceptionName as e: # code to exec if ExceptionName occurs try: f = open('data.txt', 'r') except IOError as e: print("Can't open file:", e) return False # or sys.exit(1), etc. Throw exceptions with raise; there is also a finally (c) 1998-2015 CyberWeb Consulting. All rights reserved. Python 2 vs. Python 3 The What and the Why Fix early design flaws Some new features, many small improvements Plan: develop (remainder of) 2.x and 3.x together Provide transition tools (2to3, 2.6+, -Q, -3) Key Updates (no major syntax changes) print, exec changed to functions True division: 1/2 == 0.5 Performance (more iterators, fewer lists) Consolidation/unification (integers, classes) Strings: Unicode default; bytes/bytearray types Intro to Python 3 article FYI informit.com/articles/article.aspx?p=1328795
  22. 22. 22 (c) 1998-2015 CyberWeb Consulting. All rights reserved. Where do you go from here? •The tip of the iceberg… System Administration scripting tools and automation Networked/Internet Client-Server systems Graphical User Interface (GUI) design and development Web frameworks and rich Internet applications (RIA) Scientific/numeric/mathematics-centric development Database programming, Object-Relational Mappers (ORMs) XML, JSON, CSV and other forms of text processing Java with Jython; .NET/Mono with IronPython; COM, MFC Graphics/imaging/multimedia/visual art processing Multithreaded and higher-performance applications Embedded system design (hardware as well as Python) QA/Testing automated test tools, suites, and frameworks Rapid application prototyping (all application areas) (c) 1998-2015 CyberWeb Consulting. All rights reserved. Additional Resources Books for programmers (more @ goo.gl/i4u0R) Quick Python Book (2010) Python Fundamentals LiveLessons DVD (Chun, 2009) Core Python Programming (2006 [2009]) Dive into Python (2009, 2004) Beginning Python: From Novice to Professional (2008) Python Cookbook (2013, 2005) Python Standard Library by Example (2011) Python Essential Reference (2009) & Python in a Nutshell (2006) Some online resources Python Quick Reference Guide rgruet.free.fr#QuickRef Python Conferences worldwide www.pycon.org Core Python Programming corepython.com Mailing list/newsgroup groups.google.com/group/comp.lang.python Python Docs (+ FAQ, tutorial,…) docs.python.org External 3rd-party/ repo python.org/pypi
  23. 23. 23 (c) 1998-2015 CyberWeb Consulting. All rights reserved. 1. Beautiful is better than ugly. 2. Explicit is better than implicit. 3. Simple is better than complex. 4. Complex is better than complicated. 5. Flat is better than nested. 6. Sparse is better than dense. 7. Readability counts. 8. Special cases aren't special enough to break the rules. 9. Although practicality beats purity. 10. Errors should never pass silently. 11. Unless explicitly silenced. 12. In the face of ambiguity, refuse the temptation to guess. 13. There should be one — and preferably only one — obvious way to do it. 14. Although that way may not be obvious at first unless you're Dutch. 15. Now is better than never. 16. Although never is often better than right now. 17. If the implementation is hard to explain, it's a bad idea. 18. If the implementation is easy to explain, it may be a good idea. 19. Namespaces are one honking great idea — let's do more of those! The Zen of Python (or import this by Tim Peters) (c) 1998-2015 CyberWeb Consulting. All rights reserved. Thank you! Questions? +Wesley Chun # Google+ @wescpy # Twitter wescpy@gmail.com # e-mail corepython.com # books cyberwebconsulting.com # training wescpy.blogspot.com # Python blog wesc.livejournal.com # personal blog
  24. 24. THE COMPLETE DEVELOPER'S GUIDE TO PYTHON • New to Python? The definitive guide to Python development for experienced programmers • Covers core language features thoroughly, including those found in the latest Python releases — learn more than just the syntax! • Learn advanced topics such as regular expressions, networking, multithreading, GUI, Web/CGI, and Python extensions • Includes brand-new material on databases, Internet clients, Java/Jython, and Microsoft Office, plus Python 2.6 and 3 • Presents hundreds of code snippets, interactive examples, and practical exercises to strengthen your Python skills Python is an agile, robust, expressive, fully object-oriented, extensible, and scalable programming language. It combines the power of compiled languages with the simplicity and rapid development of scripting languages. In Core Python Programming, Second Edition, leading Python developer and trainer Wesley Chun helps you learn Python quickly and comprehensively so that you can immediately succeed with any Python project. Using practical code examples, Chun introduces all the fundamentals of Python programming: syntax, objects and memory management, data types, operators, files and I/O, functions, generators, error handling and exceptions, loops, iterators, functional programming, object-oriented programming and more. After you learn the core fundamentals of Python, he shows you what you can do with your new skills, delving into advanced topics, such as regular expressions, networking programming with sockets, multithreading, GUI development, Web/CGI programming and extending Python in C. This edition reflects major enhancements in the Python 2.x series, including 2.6 and tips for migrating to 3. It contains new chapters on database and Internet client programming, plus coverage of many new topics, including new-style classes, Java and Jython, Microsoft Office (Win32 COM Client) programming, and much more. • Learn professional Python style, best practices, and good programming habits • Gain a deep understanding of Python's objects and memory model as well as its OOP features, including those found in Python's new-style classes • Build more effective Web, CGI, Internet, and network and other client/ server applications • Learn how to develop your own GUI applications using Tkinter and other toolkits available for Python • Improve the performance of your Python applications by writing extensions in C and other languages, or enhance I/O-bound applications by using multithreading • Learn about Python's database API and how to use a variety of database systems with Python, including MySQL, Postgres, and SQLite • Features appendices on Python 2.6 & 3, including tips on migrating to the next generation! Core Python Programming Second Edition "The long-awaited second edition of Wesley Chun's Core Python Programming proves to be well worth the wait–its deep and broad coverage and useful exercises will help readers learn and practice good Python." — ALEX MARTELLI, author of Python in a Nutshell and editor of Python Cookbook "There has been lot of good buzz around Wesley Chun's Core Python Programming. It turns out that all the buzz is well earned. I think this is the best book currently available for learning Python. I would recommend Chun's book over Learning Python (O'Reilly), Programming Python (O'Reilly), or The Quick Python Book (Manning)." — DAVID MERTZ, Ph.D., IBM DeveloperWorks® "Finally, a book good enough to be both a textbook and a reference on the Python language now exists." — MICHAEL BAXTER, Linux Journal Wesley Chun FOR MORE INFORMATION PLEASE VISIT: informit.com/python Available wherever technical books are sold. AVAILABLE • BOOK: 9780132269933 • SAFARI ONLINE • E-BOOK: 9780137060566 • SONY: 9780137061259 SAVE up to 40% Buy 1 Save 35% | Buy 2 or More and Save 40% Use discount code: PYTHONCENTER at informit.com/python
  25. 25. Other titles by Wesley Chun FOR MORE INFORMATION PLEASE VISIT: informit.com/python Available wherever technical books are sold. SAVE up to 40% Buy 1 Save 35% | Buy 2 or More and Save 40% Use discount code: PYTHONCENTER at informit.com/python About the Author WESLEY J. CHUN, MSCS, is the author of Python Fundamentals, a companion video to Core Python Programming, and the coauthor of Python Web Development with Django. In addition to being a senior software architect, he runs CyberWeb (cyberwebconsulting.com), a consulting business specializing in Python software engineering and technical training. He has more than twenty-five years of programming, teaching, and writing experience, including more than a decade with Python. While at Yahoo!, he helped create Yahoo!Mail and Yahoo! People Search using Python. He holds degrees in computer science, mathematics, and music from the University of California. Python Web Development with Django JEFF FORCIER, PAUL BISSEX, WESLEY CHUN | ISBN: 9780132356138 Using the simple, robust, Python-based Django framework, you can build powerful Web solutions with remarkably few lines of code. In Python Web Development with Django®, three experienced Django and Python developers cover all the techniques, tools, and concepts you need to make the most of Django 1.0, including all the major features of the new release. The authors teach Django through in-depth explanations, plus provide extensive sample code supported with images and line-by-line explanations. You’ll discover how Django leverages Python’s development speed and flexibility to help you solve a wide spectrum of Web development problems and learn Django best practices covered nowhere else. You’ll build your first Django application in just minutes and deepen your real-world skills through start-to-finish application projects. Python Fundamentals (Video Training) WESLEY CHUN | ISBN: 9780137143412 FOR ANY STUDENT OR PROFESSIONAL INTERESTED IN LEARNING THE FUNDAMENTALS OF PYTHON In this one-of-a-kind video package, leading Python developer and trainer Wesley Chun helps you learn Python quickly and comprehensively, so that you can immediately succeed with any Python project. Just click and watch: One step at a time, you will master Python fundamentals. If you already have Python experience, these videos will help further develop your skills. The lessons start with an introduction to the core features of the Python language, including syntax basics and standard types and operations. The lessons progress into advanced topics, such as Python’s memory model and object-oriented programming.

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