Efnisyfirlit

• Title Page
• Getting the Most from Your eText
• New to this Edition
• Tips for Using the Interactive Exercises
• A Tour of the Book
• Walkthrough of the Learning Aids
• Acknowledgments
• Quick Reference
• 1. Introduction
• 1.1 Computer Programs
• Self Check
• 1.2 The Anatomy of a Computer
• Self Check
• Computing & Society 1.1 Computers Are Everywhere
• 1.3 The Python Programming Language
• Self Check
• 1.4 Becoming Familiar with Your Programming Environment
• Self Check
• Programming Tip 1.1 Interactive Mode
• Programming Tip 1.2 Backup Copies
• Special Topic 1.1 The Python Interpreter
• 1.5 Analyzing Your First Program
• Syntax 1.1 print Statement
• Self Check
• 1.6 Errors
• Self Check
• Common Error 1.1 Misspelling Words
• 1.7 Problem Solving: Algorithm Design
• Self Check
• Computing & Society 1.2 Data Is Everywhere
• How To 1.1 Describing an Algorithm with Pseudocode
• Worked Example 1.1 Writing an Algorithm for Tiling a Floor
• Chapter Summary
• Interactive Review and Practice
• Practice 1.1
• Practice 1.2
• Practice 1.3
• Practice 1.4
• Practice 1.5
• Practice 1.6
• Practice 1.7
• End-of-Chapter Exercises
• Review Exercises
• Programming Exercises
• 2. Programming with Numbers and Strings
• 2.1 Variables
• 2.1.1 Defining Variables
• Syntax 2.1 Assignment
• Self Check
• 2.1.2 Number Types
• Self Check
• 2.1.3 Variable Names
• Self Check
• 2.1.4 Constants
• Self Check
• 2.1.5 Comments
• Common Error 2.1 Using Undefined Variables
• Programming Tip 2.1 Choose Descriptive Variable Names
• Programming Tip 2.2 Do Not Use Magic Numbers
• 2.2 Arithmetic
• 2.2.1 Basic Arithmetic Operations
• Self Check
• 2.2.2 Powers
• Self Check
• 2.2.3 Floor Division and Remainder
• Self Check
• 2.2.4 Calling Functions
• Syntax 2.2 Calling Functions
• Self Check
• 2.2.5 Mathematical Functions
• Self Check
• Common Error 2.2 Roundoff Errors
• Common Error 2.3 Unbalanced Parentheses
• Programming Tip 2.3 Use Spaces in Expressions
• Special Topic 2.1 Other Ways to Import Modules
• Special Topic 2.2 Combining Assignment and Arithmetic
• Special Topic 2.3 Line Joining
• 2.3 Problem Solving: First Do It By Hand
• Self Check
• Worked Example 2.1 Computing Travel Time
• 2.4 Strings
• 2.4.1 The String Type
• Self Check
• 2.4.2 Concatenation and Repetition
• Self Check
• 2.4.3 Converting Between Numbers and Strings
• Self Check
• 2.4.4 Strings and Characters
• Self Check
• 2.4.5 String Methods
• Self Check
• Special Topic 2.4 Character Values
• Special Topic 2.5 Escape Sequences
• Computing & Society 2.1 International Alphabets and Unicode
• 2.5 Input and Output
• 2.5.1 User Input
• Self Check
• 2.5.2 Numerical Input
• Self Check
• 2.5.3 Formatted Output
• Syntax 2.3 String Format Operator
• Self Check
• Programming Tip 2.4 Don’t Wait to Convert
• How To 2.1 Writing Simple Programs
• Worked Example 2.2 Computing the Cost of Stamps
• Computing & Society 2.2 Bugs in Silicon
• 2.6 Graphics: Simple Drawings
• 2.6.1 Creating a Window
• Self Check
• 2.6.2 Lines and Polygons
• Self Check
• 2.6.3 Filled Shapes and Color
• Self Check
• 2.6.4 Ovals, Circles, and Text
• Self Check
• How To 2.2 Graphics: Drawing Graphical Shapes
• Toolbox 2.1 Symbolic Processing with SymPy
• Chapter Summary
• Interactive Review and Practice
• Practice 2.1
• Practice 2.2
• Practice 2.3
• Practice 2.4
• Practice 2.5
• Practice 2.6
• End-of-Chapter Exercises
• Review Exercises
• Programming Exercises
• 3. Decisions
• 3.1 The if Statement
• Syntax 3.1 if Statement
• Self Check
• Common Error 3.1 Tabs
• Programming Tip 3.1 Avoid Duplication in Branches
• Special Topic 3.1 Conditional Expressions
• 3.2 Relational Operators
• Self Check
• Common Error 3.2 Exact Comparison of Floating-Point Numbers
• Special Topic 3.2 Lexicographic Ordering of Strings
• How To 3.1 Implementing an if Statement
• Worked Example 3.1 Extracting the Middle
• 3.3 Nested Branches
• Self Check
• Programming Tip 3.2 Hand-Tracing
• Computing & Society 3.1 Dysfunctional Computerized Systems
• 3.4 Multiple Alternatives
• Self Check
• Toolbox 3.1 Sending E-mail
• 3.5 Problem Solving: Flowcharts
• Self Check
• 3.6 Problem Solving: Test Cases
• Self Check
• Programming Tip 3.3 Make a Schedule and Make Time for Unexpected Problems
• 3.7 Boolean Variables and Operators
• Self Check
• Common Error 3.3 Confusing and and or Conditions
• Programming Tip 3.4 Readability
• Special Topic 3.3 Chaining Relational Operators
• Special Topic 3.4 Short-Circuit Evaluation of Boolean Operators
• Special Topic 3.5 De Morgan’s Law
• 3.8 Analyzing Strings
• Self Check
• 3.9 Application: Input Validation
• Self Check
• Special Topic 3.6 Terminating a Program
• Special Topic 3.7 Interactive Graphical Programs
• Computing & Society 3.2 Artificial Intelligence
• Worked Example 3.2 Graphics: Intersecting Circles
• Toolbox 3.2 Plotting Simple Graphs
• Chapter Summary
• Interactive Review and Practice
• Practice 3.1
• Practice 3.2
• Practice 3.3
• Practice 3.4
• Practice 3.5
• Practice 3.6
• Practice 3.7
• Practice 3.8
• Practice 3.9
• End-of-Chapter Exercises
• Review Exercises
• Programming Exercises
• 4. Loops
• 4.1 The while Loop
• Syntax 4.1 while Statement
• Self Check
• Common Error 4.1 Don’t Think “Are We There Yet?”
• Common Error 4.2 Infinite Loops
• Common Error 4.3 Off-by-One Errors
• Special Topic 4.1 Special Form of the print Function
• Computing & Society 4.1 The First Bug
• 4.2 Problem Solving: Hand-Tracing
• Self Check
• 4.3 Application: Processing Sentinel Values
• Self Check
• Special Topic 4.2 Processing Sentinel Values with a Boolean Variable
• Special Topic 4.3 Redirection of Input and Output
• 4.4 Problem Solving: Storyboards
• Self Check
• 4.5 Common Loop Algorithms
• 4.5.1 Sum and Average Value
• Self Check
• 4.5.2 Counting Matches
• Self Check
• 4.5.3 Prompting Until a Match is Found
• Self Check
• 4.5.4 Maximum and Minimum
• Self Check
• 4.5.5 Comparing Adjacent Values
• Self Check
• 4.6 The for Loop
• Syntax 4.2 for Statement
• Syntax 4.3 for Statement with range Function
• Self Check
• Programming Tip 4.1 Count Iterations
• How To 4.1 Writing a Loop
• 4.7 Nested Loops
• Self Check
• Worked Example 4.1 Average Exam Grades
• Worked Example 4.2 A Grade Distribution Histogram
• 4.8 Processing Strings
• 4.8.1 Counting Matches
• Self Check
• 4.8.2 Finding All Matches
• Self Check
• 4.8.3 Finding the First or Last Match
• Self Check
• 4.8.4 Validating a String
• Self Check
• 4.8.5 Building a New String
• Self Check
• 4.9 Application: Random Numbers and Simulations
• 4.9.1 Generating Random Numbers
• 4.9.2 Simulating Die Tosses
• 4.9.3 The Monte Carlo Method
• Self Check
• Worked Example 4.3 Graphics: Bull’s Eye
• 4.10 Graphics: Digital Image Processing
• 4.10.1 Filtering Images
• 4.10.2 Reconfiguring Images
• Self Check
• 4.11 Problem Solving: Solve a Simpler Problem First
• Self Check
• Computing & Society 4.2 Digital Piracy
• Chapter Summary
• Interactive Review and Practice
• Practice 4.1
• Practice 4.2
• Practice 4.3
• Practice 4.4
• Practice 4.5
• Practice 4.6
• Practice 4.7
• Practice 4.8
• Practice 4.9
• Practice 4.10
• Practice 4.11
• End-of-Chapter Exercises
• Review Exercises
• Programming Exercises
• 5. Functions
• 5.1 Functions as Black Boxes
• Self Check
• 5.2 Implementing and Testing Functions
• 5.2.1 Implementing a Function
• 5.2.2 Testing a Function
• Syntax 5.1 Function Definition
• 5.2.3 Programs that Contain Functions
• Syntax 5.2 Program with Functions
• Self Check
• Programming Tip 5.1 Function Comments
• Programming Tip 5.2 Naming Functions
• 5.3 Parameter Passing
• Self Check
• Programming Tip 5.3 Do Not Modify Parameter Variables
• Common Error 5.1 Trying to Modify Arguments
• 5.4 Return Values
• Self Check
• Special Topic 5.1 Using Single-Line Compound Statements
• How To 5.1 Implementing a Function
• Worked Example 5.1 Generating Random Passwords
• 5.5 Functions Without Return Values
• Self Check
• Computing & Society 5.1 Personal Computing
• 5.6 Problem Solving: Reusable Functions
• Self Check
• 5.7 Problem Solving: Stepwise Refinement
• Self Check
• Programming Tip 5.4 Keep Functions Short
• Programming Tip 5.5 Tracing Functions
• Programming Tip 5.6 Stubs
• Worked Example 5.2 Calculating a Course Grade
• Worked Example 5.3 Using a Debugger
• 5.8 Variable Scope
• Self Check
• Programming Tip 5.7 Avoid Global Variables
• Worked Example 5.4 Graphics: Rolling Dice
• 5.9 Graphics: Building an Image Processing Toolkit
• 5.9.1 Getting Started
• 5.9.2 Comparing Images
• 5.9.3 Adjusting Image Brightness
• 5.9.4 Rotating an Image
• 5.9.5 Using the Toolkit
• Self Check
• Worked Example 5.5 Plotting Growth or Decay
• 5.10 Recursive Functions (Optional)
• Self Check
• How To 5.2 Thinking Recursively
• Toolbox 5.1 Turtle Graphics
• Chapter Summary
• Interactive Review and Practice
• Practice 5.1
• Practice 5.2
• Practice 5.3
• Practice 5.4
• Practice 5.5
• Practice 5.6
• Practice 5.7
• Practice 5.8
• Practice 5.9
• Practice 5.10
• End-of-Chapter Exercises
• Review Exercises
• Programming Exercises
• 6. Lists
• 6.1 Basic Properties of Lists
• 6.1.1 Creating Lists
• Self Check
• 6.1.2 Accessing List Elements
• Syntax 6.1 Lists
• Self Check
• 6.1.3 Traversing Lists
• Self Check
• 6.1.4 List References
• Self Check
• Common Error 6.1 Out-of-Range Errors
• Programming Tip 6.1 Use Lists for Sequences of Related Items
• Special Topic 6.1 Negative Subscripts
• Special Topic 6.2 Common Container Functions
• Computing & Society 6.1 Computer Viruses
• 6.2 List Operations
• 6.2.1 Appending Elements
• Self Check
• 6.2.2 Inserting an Element
• Self Check
• 6.2.3 Finding an Element
• Self Check
• 6.2.4 Removing an Element
• Self Check
• 6.2.5 Concatenation and Replication
• Self Check
• 6.2.6 Equality Testing
• Self Check
• 6.2.7 Sum, Maximum, Minimum, and Sorting
• Self Check
• 6.2.8 Copying Lists
• Self Check
• Special Topic 6.3 Slices
• 6.3 Common List Algorithms
• 6.3.1 Filling
• Self Check
• 6.3.2 Combining List Elements
• Self Check
• 6.3.3 Element Separators
• Self Check
• 6.3.4 Maximum and Minimum
• Self Check
• 6.3.5 Linear Search
• Self Check
• 6.3.6 Collecting and Counting Matches
• Self Check
• 6.3.7 Removing Matches
• Self Check
• 6.3.8 Swapping Elements
• Self Check
• 6.3.9 Reading Input
• Self Check
• Worked Example 6.1 Plotting Trigonometric Functions
• 6.4 Using Lists with Functions
• Self Check
• Special Topic 6.4 Call by Value and Call by Reference
• Special Topic 6.5 Tuples
• Special Topic 6.6 Functions with a Variable Number of Arguments
• Special Topic 6.7 Tuple Assignment
• Special Topic 6.8 Returning Multiple Values with Tuples
• Toolbox 6.1 Editing Sound Files
• 6.5 Problem Solving: Adapting Algorithms
• Self Check
• How To 6.1 Working with Lists
• Worked Example 6.2 Rolling the Dice
• 6.6 Problem Solving: Discovering Algorithms by Manipulating Physical Objects
• Self Check
• 6.7 Tables
• 6.7.1 Creating Tables
• 6.7.2 Accessing Elements
• 6.7.3 Locating Neighboring Elements
• 6.7.4 Computing Row and Column Totals
• 6.7.5 Using Tables with Functions
• Self Check
• Worked Example 6.3 A World Population Table
• Special Topic 6.9 Tables with Variable Row Lengths
• Worked Example 6.4 Graphics: Drawing Regular Polygons
• Chapter Summary
• Interactive Review and Practice
• Practice 6.1
• Practice 6.2
• Practice 6.3
• Practice 6.4
• Practice 6.5
• Practice 6.6
• Practice 6.7
• End-of-Chapter Exercises
• Review Exercises
• Programming Exercises
• 7. Files and Exceptions
• 7.1 Reading and Writing Text Files
• 7.1.1 Opening a File
• Syntax 7.1 Opening and Closing Files
• 7.1.2 Reading from a File
• 7.1.3 Writing to a File
• 7.1.4 A File Processing Example
• Self Check
• Common Error 7.1 Backslashes in File Names
• 7.2 Text Input and Output
• 7.2.1 Iterating over the Lines of a File
• Self Check
• 7.2.2 Reading Words
• Self Check
• 7.2.3 Reading Characters
• Self Check
• 7.2.4 Reading Records
• Self Check
• Special Topic 7.1 Reading the Entire File
• Special Topic 7.2 Regular Expressions
• Special Topic 7.3 Character Encodings
• Toolbox 7.1 Working with CSV Files
• 7.3 Command Line Arguments
• Self Check
• How To 7.1 Processing Text Files
• Worked Example 7.1 Analyzing Baby Names
• Toolbox 7.2 Working with Files and Directories
• Computing & Society 7.1 Encryption Algorithms
• 7.4 Binary Files and Random Access (Optional)
• 7.4.1 Reading and Writing Binary Files
• 7.4.2 Random Access
• 7.4.3 Image Files
• 7.4.4 Processing BMP Files
• Self Check
• Worked Example 7.2 Graphics: Displaying a Scene File
• 7.5 Exception Handling
• 7.5.1 Raising Exceptions
• Syntax 7.2 Raising an Exception
• 7.5.2 Handling Exceptions
• Syntax 7.3 Handling Exceptions
• 7.5.3 The finally Clause
• Syntax 7.4 The finally Clause
• Self Check
• Programming Tip 7.1 Raise Early, Handle Late
• Programming Tip 7.2 Do Not Use except and finally in the Same try Statement
• Special Topic 7.4 The with Statement
• Toolbox 7.3 Reading Web Pages
• 7.6 Application: Handling Input Errors
• Self Check
• Toolbox 7.4 Statistical Analysis
• Worked Example 7.3 Creating a Bubble Chart
• Computing & Society 7.2 The Ariane Rocket Incident
• Chapter Summary
• Interactive Review and Practice
• Practice 7.1
• Practice 7.2
• Practice 7.3
• Practice 7.4
• Practice 7.5
• Practice 7.6
• End-of-Chapter Exercises
• Review Exercises
• Programming Exercises
• 8. Sets and Dictionaries
• 8.1 Sets
• 8.1.1 Creating and Using Sets
• Self Check
• 8.1.2 Adding and Removing Elements
• Self Check
• 8.1.3 Subsets
• Self Check
• 8.1.4 Set Union, Intersection, and Difference
• Self Check
• Worked Example 8.1 Counting Unique Words
• Programming Tip 8.1 Use Python Sets, Not Lists, for Efficient Set Operations
• Special Topic 8.1 Hashing
• Computing & Society 8.1 Standardization
• 8.2 Dictionaries
• Syntax 8.1 Set and Dictionary Literals
• 8.2.1 Creating Dictionaries
• Self Check
• 8.2.2 Accessing Dictionary Values
• Self Check
• 8.2.3 Adding and Modifying Items
• Self Check
• 8.2.4 Removing Items
• Self Check
• 8.2.5 Traversing a Dictionary
• Self Check
• Special Topic 8.2 Iterating over Dictionary Items
• Special Topic 8.3 Storing Data Records
• Worked Example 8.2 Translating Text Messages
• 8.3 Complex Structures
• 8.3.1 A Dictionary of Sets
• 8.3.2 A Dictionary of Lists
• Self Check
• Special Topic 8.4 User Modules
• Worked Example 8.3 Graphics: Pie Charts
• Toolbox 8.1 Harvesting JSON Data from the Web
• Chapter Summary
• Interactive Review and Practice
• Practice 8.1
• Practice 8.2
• Practice 8.3
• End-of-Chapter Exercises
• Review Exercises
• Programming Exercises
• 9. Objects and Classes
• 9.1 Object-Oriented Programming
• Self Check
• 9.2 Implementing a Simple Class
• Self Check
• 9.3 Specifying the Public Interface of a Class
• Self Check
• 9.4 Designing the Data Representation
• Self Check
• Programming Tip 9.1 Make All Instance Variables Private, Most Methods Public
• 9.5 Constructors
• Syntax 9.1 Constructor
• Self Check
• Common Error 9.1 Trying to Call a Constructor
• Special Topic 9.1 Default and Named Arguments
• 9.6 Implementing Methods
• Syntax 9.2 Method Definition
• Self Check
• Programming Tip 9.2 Define Instance Variables Only in the Constructor
• Special Topic 9.2 Class Variables
• 9.7 Testing a Class
• Self Check
• How To 9.1 Implementing a Class
• Worked Example 9.1 Implementing a Bank Account Class
• 9.8 Problem Solving: Tracing Objects
• Self Check
• 9.9 Problem Solving: Patterns for Object Data
• 9.9.1 Keeping a Total
• Self Check
• 9.9.2 Counting Events
• Self Check
• 9.9.3 Collecting Values
• Self Check
• 9.9.4 Managing Properties of an Object
• Self Check
• 9.9.5 Modeling Objects with Distinct States
• Self Check
• 9.9.6 Describing the Position of an Object
• Self Check
• 9.10 Object References
• 9.10.1 Shared References
• 9.10.2 The None Reference
• 9.10.3 The self Reference
• 9.10.4 The Lifetime of Objects
• Self Check
• Computing & Society 9.1 Electronic Voting
• 9.11 Application: Writing a Fraction Class
• 9.11.1 Fraction Class Design
• 9.11.2 The Constructor
• 9.11.3 Special Methods
• 9.11.4 Arithmetic Operations
• 9.11.5 Logical Operations
• Self Check
• Special Topic 9.3 Object Types and Instances
• Worked Example 9.2 Graphics: A Die Class
• Computing & Society 9.2 Open Source and Free Software
• Chapter Summary
• Interactive Review and Practice
• Practice 9.1
• Practice 9.2
• Practice 9.3
• Practice 9.4
• Practice 9.5
• Practice 9.6
• Practice 9.7
• Practice 9.8
• Practice 9.9
• Practice 9.10
• Practice 9.11
• End-of-Chapter Exercises
• Review Exercises
• Programming Exercises
• 10. Inheritance
• 10.1 Inheritance Hierarchies
• Self Check
• Programming Tip 10.1 Use a Single Class for Variation in Values, Inheritance for Variation in Behavior
• Special Topic 10.1 The Cosmic Superclass: object
• 10.2 Implementing Subclasses
• Syntax 10.1 Subclass Definition
• Self Check
• Common Error 10.1 Confusing Super- and Subclasses
• 10.3 Calling the Superclass Constructor
• Syntax 10.2 Subclass Constructor
• Self Check
• 10.4 Overriding Methods
• Self Check
• Common Error 10.2 Forgetting to Use the super Function When Invoking a Superclass Method
• 10.5 Polymorphism
• Self Check
• Special Topic 10.2 Subclasses and Instances
• Special Topic 10.3 Dynamic Method Lookup
• Special Topic 10.4 Abstract Classes
• Common Error 10.3 Don’t Use Type Tests
• How To 10.1 Developing an Inheritance Hierarchy
• Worked Example 10.1 Implementing an Employee Hierarchy for Payroll Processing
• 10.6 Application: A Geometric Shape Class Hierarchy
• 10.6.1 The Base Class
• 10.6.2 Basic Shapes
• 10.6.3 Groups of Shapes
• Self Check
• Toolbox 10.1 Game Programming
• Chapter Summary
• Interactive Review and Practice
• Practice 10.1
• Practice 10.2
• Practice 10.3
• Practice 10.4
• Practice 10.5
• Practice 10.6
• End-of-Chapter Exercises
• Review Exercises
• Programming Exercises
• 11. Recursion
• 11.1 Triangle Numbers Revisited
• Self Check
• Common Error 11.1 Infinite Recursion
• Special Topic 11.1 Recursion with Objects
• 11.2 Problem Solving: Thinking Recursively
• Self Check
• Worked Example 11.1 Finding Files
• 11.3 Recursive Helper Functions
• Self Check
• 11.4 The Efficiency of Recursion
• Self Check
• 11.5 Permutations
• Self Check
• Computing & Society 11.1 The Limits of Computation
• 11.6 Backtracking
• Self Check
• Worked Example 11.2 Towers of Hanoi
• 11.7 Mutual Recursion
• Self Check
• Toolbox 11.1 Analyzing Web Pages with Beautiful Soup
• Chapter Summary
• Interactive Review and Practice
• Practice 11.1
• Practice 11.2
• Practice 11.3
• Practice 11.4
• Practice 11.5
• Practice 11.6
• Practice 11.7
• End-of-Chapter Exercises
• Review Exercises
• Programming Exercises
• 12. Sorting and Searching
• 12.1 Selection Sort
• Self Check
• 12.2 Profiling the Selection Sort Algorithm
• Self Check
• 12.3 Analyzing the Performance of the Selection Sort Algorithm
• Self Check
• Special Topic 12.1 Oh, Omega, and Theta
• Special Topic 12.2 Insertion Sort
• 12.4 Merge Sort
• Self Check
• 12.5 Analyzing the Merge Sort Algorithm
• Self Check
• Special Topic 12.3 The Quicksort Algorithm
• Computing & Society 12.1 The First Programmer
• 12.6 Searching
• 12.6.1 Linear Search
• 12.6.2 Binary Search
• Self Check
• 12.7 Problem Solving: Estimating the Running Time of an Algorithm
• 12.7.1 Linear Time
• 12.7.2 Quadratic Time
• 12.7.3 The Triangle Pattern
• 12.7.4 Logarithmic Time
• Self Check
• Programming Tip 12.1 Searching and Sorting
• Special Topic 12.4 Comparing Objects
• Worked Example 12.1 Enhancing the Insertion Sort Algorithm
• Chapter Summary
• Interactive Review and Practice
• Practice 12.1
• Practice 12.2
• Practice 12.3
• Practice 12.4
• Practice 12.5
• Practice 12.6
• Practice 12.7
• End-of-Chapter Exercises
• Review Exercises
• Programming Exercises
• Appendices
• Appendix A Python Operator Summary
• Appendix B Python Reserved Word Summary
• Appendix C The Python Standard Library
• Built-in Functions
• Built-in Classes
• File Input/Output
• csv Module
• email.mime.multipart Module
• email.mime.text Module
• email.mime.image Module
• email.mime.application Module
• json Module
• math Module
• os Module
• os.path Module
• random Module
• re Module
• shutil Module
• smtplib Module
• sys Module
• time Module
• urllib.parse Module
• urllib.request Module
• ezgraphics Module
• turtle Module
• Appendix D The Basic Latin and Latin-1 Subsets of Unicode
• Appendix E Binary Numbers and Bit Operations
• Binary Numbers
• Two’s Complement Integers
• Bit and Shift Operations
• Appendix F HTML Summary
• Glossary
• Illustration Credits
• Wiley End User License Agreement