Lesson 1

The computer programming or coding involves writing programs and running them to see the results. You would not need to install any programs or software to follow the examples given in this book. All example code and exercises can be completed using programming tools within a modern internet browser such as Google''s Chrome or Mozilla''s Firefox.

Example Code

def func():
    # example function

func()
print "calling the function here"

Trinket

[Trinket.io](http://trinket.io) Website **Pencil Code** Pencil Code is a collaborative programming web site for trying out computer programs to draw, play music and create games. Watch this Pencil Code overview video.

PencilCode Website