Transcript Programming 101 with Python: an open

Programming 101 with
Python: an open-source,
cross-platform, and fun
language
By J. Burton Browning, Ed.D.
Copyright © J. Burton Browning
All rights reserved. If you use all or part of this work,
please email or contact me with details.
Today we will discuss:
• Overview of my book as course text and
history of the language
• A few basic features with Python
• Advanced features of Python—not just an
introductory language!
History
• Developed by Guido van Rossum 1990
• Actively maintained by him and others
• New features and extensions added all the
time
• Many books and websites with information
• Name is based on Monty Python and not a
large snake!
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Python features
Easy to learn
Great for RAD
Cross-platform and open-source
Compile to *.exe
GUI and other add-ins such as Pygame,
Vpython, WX Windows, etc.
Forces “clean” coding skills
Syntax similar to C/C++ and JAVA – can export
to C
Free and commercial tools available
Used everywhere from application development
and server scripting to teaching
Course: Intro to Programming
and Logic
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History of computers and programming
Prototype solutions (flowchart and pseudocode)
Program CLI applications
Basic control structures
Debugging
Advanced topics: GUI design, Add-in SDK’s,
COM integration, OOP, etc.
Two modes of operation
• Built-in IDE “IDLE”
• “Line-by-line” or
interactive mode
• “Multi-line” or script
mode – can save
programs for reuse
• Helloi.avi
Variables and Math operators
• Variables are automatically “typed” to best
fit. No variable declaration.
• Variables are immutable and not reused.
• Math operators similar to C++, JAVA, VB,
etc. * = multiplication, + = addition, %
modulus, etc.
Comment statements
• Pound sign ( # ) is used for single line
comments.
• Multi-line comments are wrapped in triple quoted
strings.
“””
any comments
here…
“””
Examples
Single selection structure and
Statement blocks
• Handled by indentation
• Forces “clean” code writing
• Format specifiers similar to C++/JAVA
Dual selection structure
• Similar to other languages
• Indentation defines statement blocks
Multiple selection structure
Similar to if, else if, else (could be switch or
select case in other languages).
elif is same as else if
While
• Similar to loop in other languages
For
for x in range(10):
print x
name=“Smith”
for letter in name:
print letter
Functions
• def function_name():
any code for function…
Arrays
• Very rich collection of “array-like”
structures
• Lists, tuples, and dictionaries
• More powerful than a standard array
• Teach same principles
• Easy to learn and implement
Dictionary example
Class design
• Can declare classes in same file or separate file.
• Can focus on class design without other syntax
issues associated with other languages.
• Put fun into class design!
Class example
GUI programming
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Free SDK pythoncard.sourceforge.net
Similar to VB/VB.NET
Cross-platform unlike Visual Basic!
No special “dot net” framework needed!
Other GUI SDK’s available as well
Pygame
• Free sdk from www.pygame.org for
game/simulation development.
• Many good/free tutorials available.
• Open-source games you can modify.
3D Graphics/animation
• Vpython.org free
3d/animation sdk.
• Use for general
graphics study or
physics classes.
More information
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www.python.org
www.vpython.org
www.pygame.org
http://pythoncard.sourceforge.net/
http://www.activestate.com/products/komodo_ide/
Questions?
Text:
Design, Logic, and Programming with
Python by James B. Browning
www.iuniverse.com
www.amazon.com
Barnes and Noble
Thank you and good luck!