Introduction to Python
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1 Introduction to Python Version (12/29/2008) [CG] Page 1 of 243
2 Introduction...6 About Python...7 The Python Interpreter...9 Exercises...11 Python Compilation...12 Python Scripts in Linux/Unix & Windows...14 Exercises...16 Whitespace Significance...17 Line Termination...19 Comments in Python...20 Basic Output Generation...21 Simple User Input...23 Exercises...24 Python Modules...25 Module Search Paths...28 Determining the System Search Path...29 Exercises...30 Working with Variables...31 Python Variables...32 Naming Conventions & Rules...37 Types as Objects...38 Variable References & Garbage Collection...40 Sequence Types...42 Table of Contents Membership Statements...44 List Iteration...45 List Enumeration...46 Sequence Assignments...47 Mutable vs Immutable Objects...49 Multi Target Assignments...51 Assignment Shorthand...52 Exercises...54 Numeric Operations...55 More About Numeric Types...56 Numeric Tools...59 The Decimal Module...60 Operator Precedence...61 Exercises...62 String Types...63 Generating Strings...64 Common String Methods...67 Type Conversion...76 Exercises...78 Formatting String Output...79 Variable Substitution...81 String Slicing...82 Exercises...83 Page 2 of 243
3 Lists & Tuples...84 Python Lists...85 Common List Methods...86 Other List Operations...89 The range() Function...91 Multi-Dimensional Lists (Matrices)...93 Tuples...94 Dictionaries...96 Python Dictionaries...97 Assigning Values to Dictionaries...98 Dictionary Methods Dictionaries vs Lists & Tuples Exercises Python Compound Statements Python Nesting Recap Comparison Operations The if Statement The if Ternary Expression Using try To Handle Errors The while Loop Exercises The for Loop Traversing Parallel Sets Exercises Basic Input/Output with Files Opening Files Working with Files Controlling Output Location Exercises Understanding Iterators Iterable Objects The iter() Function Using map With Iterators Exercises Python List Comprehension Basic List Comprehensions Compound List Comprehensions Exercises Creating Python Functions Function Basics Defining Functions Function Polymorphism Argument Defaults Lambdas Local Variables Variable Masking Understanding builtin Preventing Variable Modifications Exercises Argument Matching Methods Exercises Modules & Packages Module Basics Packages Page 3 of 243
4 Using all and _ Variables Using name Exercises Object Oriented Python About OOP The Class Statements Class Inheritance Classes as Objects Using Dictionaries Understanding self Overriding Inherited Methods More Inheritance Operator Overloading The iter Method The getitem Method Empty Classes For Storage Pickling & Shelving Objects Exercises Multiple Inheritance Exceptions About Exceptions Python's Default Exception Handler Using Try/Except/Finally Exceptions Generating User Defined Exceptions More on Exceptions Exception Examples Using Asserts Exception Classes Exercises Python Generators About Generators Generator Syntax Communicating with Generators with send() Exercises OS Interfacing About the sys & os Modules Gleaning More Using doc & help() Common sys Module Attributes & Methods Working With the os Module & Files/Directories File & Path Examples Working with os.path os & os.path Module Examples Running Shell Commands Accessing Databases with Python About Database Access About psycopg PostgreSQL Connect Strings Cursor Objects PsychoPG2 Examples Exercises Python & the Web About the Web Understanding HTTP Using the CGI Module Page 4 of 243
5 Questions? Where to Get Answers/Next Steps Page 5 of 243
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