As usual, create two directories for today's class. Create a
directory called lecture15 under activities, and
a directory called lab15 under labs.
Up to now, you have used three different data types: int,
float, and string. Today, we will learn
about a new data type, boolean.
Conditionals allow us to change how our program executes, based off
other values we compute. They use boolean values to
determine whether or not to execute the next block of code.
Create a file called RPS.py in your lecture15
directory. Your program should generate a random play for the
computer, and prompt the user to enter their play. Your program
should display who won, and why.
Enter your play (r, p, or s): r The computer played scissors You Won! Rock beats Scissors
Create a file in_circle.py in your lab15
directory. Write a function called is_point_in_circle that
takes as parameters an x, y coordinate, and a radius
r. This function should return True
if and only if the point specified is inside a circle centered at
(0, 0), with the specified radius.
Write a program that fills as much of the turtle window as possible
with a circle. Your program should then compute A LOT of
random points within the turtle window. For each point generated, use
your is_in_circle function to decide if the specified
point is in the circle. Use turtle.dot to draw a dot at
the location specified. Keep a running tally of the number of points
that you generated were in the circle.
Use turtle.write to draw how many dots were in the circle
at (0, 0).
CHALLENGE: This mechanism can be used to estimate π, by comparing the area of the inscribed circle to the bounding square. Derive the equation necessary to estimate π, and perform your computations.
When you have finished, create a tar file of your lab15
directory. To create a tar file, execute the following commands:
cd ~/cs120/labs tar czf lab15.tgz lab15/
To submit your activity, go to cseval.roanoke.edu. You should
see an available assignment called Lab Assignment 15. Only
one of your pair should submit your activity. Make sure both partners
are listed in the header of your file.
Do not forget to email your partner todays files!