Explore the nature of programming and how programming a computer is different than using a computer.

1.1 Why Program

In this lecture we learn abut how the computer processes and stores programs.  We learn about the CPU, Memory, Storage and Input / Output devices are brought together to write a program.

1.2 Hardware Architecture

We look at how writing programs is just another form of communication.  Instead of communicating with another person, we are communicating our ideas to a computer.

1.3 Python as a Language

We look at the basics of the Python language and how we write code in Python to communicate sequential steps, conditional steps and repeated steps.

1.4 What do we Say to Python?

We look at Python's reserved words, how we name and use variables, why we choose meaningful (mnemonic) variable names and how assignment statements function.

2.1 Building Blocks of Python

We look at how we use various numerical and string operations to compute new information and store the new values in variables.

2.2 Expressions

The most basic conditional structure is the if statement where we either execute or skip a segment of code based on the results of a logical expression (i.e. asking a question).

3.1 If-Then-Else

In this lecture we look at multi-branch if statements and the try-except concept where we can indicate a group of statements to be executed if something goes wrong with a block of statements.

3.2 More Conditional Statements

We look at how code flows into and out of functions as well has how we pass information into functions and get results returned to us.

4.1 Using Pre-Defined Functions

We look at how to build our own functions using parameters and arguments as well as how we return results to the code that is calling our functions.

4.2 Building our Own Functions

These are the audio lectures to supplement the textbook 'Python for Everybody: Exploring Information' and its associated web site www.py4e.com.  There is also a video podcast of this material.

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These are the audio lectures to supplement the textbook 'Python for Everybody: Exploring Information' and its associated web site <a href="http://www.py4e.com" rel="nofollow" target="_blank">www.py4e.com</a>.  There is also a video podcast of this material.

Python for Everybody (Audio/PY4E)

We write a simple Python program that connects to a web server and retrieves a web document.   It is a very simple web browser.

12.3 Building a Web Browser in Python

We look at how use create a new class in Python and then construct a new object from that class.  We also look at some of the Python objects (like strings) that we have been using all along.

14.2 Our First Class and Object

We learn about how we can use Structured Query Language (SQL) to insert (create), read, update, and delete data in a single database table.

15.2 Single Table SQL

We look at how we can make a new class by inheriting all of the attributes and methods of a parent class and then extend the new class with additional attributes and methods.

14.4 Object Inheritance

We take a very brief look at how software communicates across the Internet using TCP/IP.

12.1 Network Technology (TCP/IP)

We look at two different ways to format data for transmission across the network including JavaScript Object Notation (JSON) and eXtended Markup Language (XML).

13.1 Data on the Web

We explore using a Google API that can be used to query location data and parse the JSON that is returned.

13.6 Using Application Programming Interfaces

In this section we look at the HTTP protocol that is used to move documents between web servers and web browsers.

12.2 Hypertext Transport Protocol (HTTP)

We look at how some of the string parsing we have done in earlier chapters can be easily done with regular expressions.

11.3 String Parsing with Regular Expressions

We look at how we construct a loop so that it runs as long as we want it to run.  We learn about iteration variables and exiting loops with the 'break' and 'continue' statements.

5.1 The Basics of Loops

We continue to look at how to construct loops including how to do something special the first time through the loop.  We introduce the idea of 'None' which is a way to indicate that a variable is currently empty.

5.4 Loop Techniques

We look at how text and lines are represented in files, how we open a file and write a loop to read through all the lines in the file.

7.1 Reading Files

We look at how we as the developers of a Python class can interact with the moment of construction and destruction of various objects created using the class.

14.3 Object Life Cycle

We look at how data is represented using the XML format.

13.2 eXtensible Markup Language (XML)

Now we will look at the HypertextMarkup Language (HTML) that we retrieved using Python and extract links from that HTML.  We are slowly building a very simple web search engine.

12.6 Parsing Web Pages

Loops have a beginning, middle, and end.  We look ant how we construct a loop to look at a list of items one at a time so we can compute an overall maximum, minimum or average.

5.3 Patterns for Making Loops

We learn about the popular JSON data format and how to handle the JSON data in Python.

13.4 JavaScript Object Notation

We look at how we map a logical database model to a physical database model by adding columns and constraints to model the table-to-table relationships.

15.5 Representing Relationships in Database Tables

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