CPSC120A
Fundamentals of Computer Science I

Write a Python program that will print the result of rolling 12 six sided dice to the terminal window.

Example Output

$ python3 practice1.py
2
1
4
3
2
6
5
4
1
2
1
1

Write a Python program that can compute the number of pairs that can be created from our CPSC 120 class. You should use the input function to determine how many students are in your class.

The number of combinations of size k that can be created from a set of size n can be computed using the binomial equation:

$$\binom nk = \frac{n!}{k! \cdot (n - k)!}$$

Example

$ python3 practice2.py
How many students are in your class? 20
There are 190 pairs.

Hopefully you are familiar with the sine and cosine functions from back in your trigonometry class. As you can imagine, these are incredibly useful functions not only for mathematics, but for drawing in general.

Details

In Emacs, create a Python program in a file called sine.py that uses the turtle module to draw a function plot of the math.sin function. The program should prompt the user for the amplitude of the sin function, in turtle window units.

Test your program by running it multiple times with different input values. Make sure your code follows the courses code conventions.

Example

$ python3 sine.py
Enter the amplitude: 100

Hint

In old CRT monitors if the same image was displayed for too long, a ghost of the image would get 'burned' into the screen. To prevent this from occuring a screensaver would run whenever the computer was inactive for a period. Modern LCD monitors no longer need screen savers, but they can still be fun to watch.

Details

In Emacs, create a Python program in a file called screen_saver.py that uses the turtle module to draw many dots on the screen. The dots should be in random locations, centers located anywhere in the window, have random sizes, in the range [100, 300], and should be random colors.

• Use the turtle.dot function to draw the dots.

• Use the turtle.pencolor function to change the color of the dots.

• Use the window_width and window_height functions to determine the width and height of the window.

Make sure your code follows the courses code conventions.

Example

$ python3 screen_saver.py

Hint

Submission

Please show your source code and run your programs for the instructor or lab assistant. Only a programs that have perfect style and flawless functionality will be accepted as complete.