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December 19, 2016

Relational operators:

< Less Than

> Greater Than

== Equal To

<= Less than or equal to

>= Greater Than or equal to

!= not equal to

These operators return a boolean value true or false. They report on the relationship of the two values that surround...

December 15, 2016

The if structure explains the processing in the following: 

Input > Processing > Output

The traditional program flow.


if this then that



if this :

    Do that


if x < 9:

     print(“x is less than 9.”)


December 13, 2016

Casting input to get what you want:

If you want numeric data from a string, you must assume that the user gave you what you want:

age=input(“What is your age?”)

print(“In 5 years you will be %i years old.” % int(age)+5 )

If you want (bad idea) y...

December 9, 2016

Remember the traditional program flow: 

Input -> Processing -> Output

Input is defined in this context as data the user gives to the program. The program then uses that data in some way - manipulates it or just stores it in memory. Finally th...

December 7, 2016


Basic Math in Python works as you expect it will:

+ adds

- subtracts

* multiplies

/ divides

x**y raises x to the exponent y

( ) work like they should

% modulo - gives remainder of division

Also works as expected


  1. Parentheses

  2. Exponent...

December 5, 2016

Some of my users gave me grief on the brevity of my last two videos so here's one that pushes the limit - running about 10 minutes.

Literals are any values you can see in the code itself.

For instance,

print("Hello, World") 

The string "Hello, W...

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