Head First Programming A Learner’s Guide to Programming Using the Python Language 1st Edition by David Griffiths, Paul Barry 0596802374 9780596802370

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Product details:

ISBN 10: 0596802374 

ISBN 13: 9780596802370

Author: David Griffiths, Paul Barry

Looking for a reliable way to learn how to program on your own, without being overwhelmed by confusing concepts? Head First Programming introduces the core concepts of writing computer programs — variables, decisions, loops, functions, and objects — which apply regardless of the programming language. This book offers concrete examples and exercises in the dynamic and versatile Python language to demonstrate and reinforce these concepts. Learn the basic tools to start writing the programs that interest you, and get a better understanding of what software can (and cannot) do. When you’re finished, you’ll have the necessary foundation to learn any programming language or tackle any software project you choose. With a focus on programming concepts, this book teaches you how to: Understand the core features of all programming languages, including: variables, statements, decisions, loops, expressions, and operators Reuse code with functions Use library code to save time and effort Select the best data structure to manage complex data Write programs that talk to the Web Share your data with other programs Write programs that test themselves and help you avoid embarrassing coding errors We think your time is too valuable to waste struggling with new concepts. Using the latest research in cognitive science and learning theory to craft a multi-sensory learning experience, Head First Programming uses a visually rich format designed for the way your brain works, not a text-heavy approach that puts you to sleep.

Table of contents:

Chapter 1: Starting to Code: Finding your way
Programming lets you do more
So how do you run your code?
Create a new program file
Prepare and run your code
A program is more than a list of commands
Codeville: Your program is like a network of roads
Branches are code intersections
if/else branches
The Python code needs interconnecting paths
Python uses indents to connect paths
Loops let you run the same piece of code over and over again
Python’s while loop
Your Programming Toolbox

Chapter 2: Textual Data: Every string has its place
Your new gig at Starbuzz Coffee
Here’s the current Starbuzz code
The cost is embedded in the HTML
A string is a series of characters
Find characters inside the text
But how do you get at more than one character?
The String Exposed
Beans’R’Us is rewarding loyal customers
Searching is complex
Python data is smart
Strings and numbers are different
The program has overloaded the Beans’R’Us Server
Time… if only you had more of it
You’re already using library code
Order is restored
Your Programming Toolbox

Chapter 3: Functions: Let’s get organized
Starbuzz is out of beans!
What does the new program need to do?
Don’t duplicate your code…
…Reuse your code instead
Reuse code with functions
Always get things in the right order
Return data with the return command
Use the Web, Luke
The function always sends the same message
Use parameters to avoid duplicating functions
Someone decided to mess with your code
The rest of the program can’t see the password variable
When you call a function, the computer creates a fresh list of variables
When you leave a function, its variables get thrown away
Starbuzz is fully stocked!
Your Programming Toolbox

Chapter 4: Data in Files and Arrays: Sort it out
Surf’s up in Codeville
Find the highest score in the results file
Iterate through the file with the open, for, close pattern
The file contains more than numbers…
Split each line as you read it
The split() method cuts the string
But you need more than one top score
Keeping track of 3 scores makes the code more complex
An ordered list makes code much simpler
Sorting is easier in memory
You can’t use a separate variable for each line of data
An array lets you manage a whole train of data
Python gives you arrays with lists
Sort the array before displaying the results
Sort the scores from highest to lowest
And the winner is…?
You somehow forgot the surfer names
Your Programming Toolbox

Chapter 5: Hashes and Databases: Putting data in its place
Who won the surfing contest?
Associate the name with the score
Associate a key with a value using a hash
Iterate hash data with for
The data isn’t sorted
When data gets complex
Return a data structure from a function
Here’s your new board!
Meanwhile, down at the studio…
The code remains the same; it’s the function that changes
TVN’s data is on the money!
Your Programming Toolbox

Chapter 6: Modular Programming: Keeping things straight
Head First Health Club is upgrading some systems
The program needs to create a transaction file
Use strings to format strings
The Format String Exposed
A late night email ruins your day
$50,000… for a donut?!
Only the sales from your program were rejected
The new bank uses a new format
Your coffee bar program still uses the old format
Don’t just update your copy
So how do you create a module…?
The transaction file is working great, too
The health club has a new requirement
The Starbuzz code
The two discount functions have the same name
Fully Qualified Names (FQNs) prevent your programs from getting confused
The discounts get the customers flooding in
Your Programming Toolbox

Chapter 7: Building a Graphical User Interface: Going all gooey
Head First TVN now produces game shows
pygame is cross platform
pygame Exposed
0… 2… 1… 9… blast off!
tkinter gives you the event loop for free
tkinter is packed with options
The GUI works, but doesn’t do anything
Connect code to your button events
The GUI program’s now ready for a screentest
But TVN is still not happy
Label it
Your Programming Toolbox

Chapter 8: Guis and Data: Data entry widgets
Head-Ex needs a new delivery system
They’ve already designed the interface
Read data from the GUI
The Entry and Text widgets let you enter text data into your GUI
Read and write data to text fields
Large Text fields are harder to handle
One of the Head-Ex deliveries went astray
Users can enter anything in the fields
Radio buttons force users to choose a valid depot
Creating radio buttons in tkinter
The radio buttons should work together
The radio buttons can share a model
The system tells the other widgets when the model changes
So how do you use models in tkinter?
Head-Ex’s business is expanding
There are too many depots on the GUI
An OptionMenu lets you have as many options as needed
The model stays the same
Things are going great at Head-Ex
Your Programming Toolbox

Chapter 8 ½: Exceptions and Message Boxes: Get the message?
What’s that smell?
Someone changed the file permissions
When it couldn’t write to the file, the program threw an exception
Catch the exception
Watch for exceptions with try/except
There’s an issue with the exception handler
A message box demands attention
Creating message boxes in Python
Your Programming Toolbox

Chapter 9: Graphical Interface Elements: Selecting the right tool
Time to mix it up
The music just kept on playing…
Not all events are generated by button clicks
Capturing the protocol event isn’t enough
Two buttons, or not two buttons? That is the question…
The checkbox is an on/off, flip/flop toggle
Working with checkboxes in tkinter
Pump up the volume!
Model a slider on a scale
Use pygame to set the volume
Use tkinter for everything else
The DJ is over the moon!
Your Programming Toolbox

Chapter 10: Custom Widgets and Classes: With an object in mind
The DJ wants to play more than one track
Create code for each track as a function
The new function contains other functions
Your new function needs to create widgets and event handlers
The DJ is confused
Group widgets together
A frame widget contains other widgets
A class is a machine for creating objects
A class has methods that define behavior
But how does an object call a method?
The SoundPanel class looks a lot like the create_gui() function
class = methods + data
The Class Exposed
The DJ has an entire directory of tracks
It’s party time!
Your Programming Toolbox

Leaving town…
It’s been great having you here in Codeville!

Appendix i: Leftovers: The Top Ten Things (we didn’t cover)
#1: Doing things “The Python Way”
#2: Using Python 2
#3: Other programming languages
#4: Automated testing techniques
#5: Debugging
#6: Command-line execution
#7: Ooops… we could’ve covered more OOP
#8: Algorithms
#9: Scary programming topics
#10: Other IDEs, shells, and text editors

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Tags: David Griffiths, Paul Barry, Programming, Learner’s