CSE 142: Computer Programming I, Autumn 2011

Dec 8 2011 3:30 PM

Turn in Python HW9 Python Homework 9 (Make a Game!)

Due Monday, Jan 2, 2012, 11:30pm.
No late submissions accepted.

Write a game of your choosing with the help of the pyGame library. It can be any game you want, as long as it is your own work and isn't basically the same as one of the examples we wrote in our Python session. Though games can be very fancy and complex if you want them to be, your submission can be something simple and straightforward if you prefer.

• Combine all of the necessary files to run your game into one big .ZIP file named game.zip that you will turn in.

Since it is the end of the quarter, it doesn't really make sense to try to reward you with a late day for 142. So if you are bold enough to write a pyGame, if you're going on to CSE 143 next quarter, we will reward you with +1 free late day in CSE 143, Winter 2012! That's right, it's the first ever cross-course assignment reward. If you're not going on to 143, the best we can offer you is a hearty "kudos", and we can post your name and a link to your game here on this web page if you like, so that other students can check it out.

Dec 1 2011 9:50 AM

Turn in Python HW8 Python Homework 8 (Date)

Due Sunday, December 11, 11:30pm.
No late submissions accepted.

Do a new object-oriented assignment that practices today's material on Python classes and objects. There will be two files to turn-in. The first is a file named date.py that implements a class Date, where each Date object represents a single calendar month/day date such as September 19. Each Date object should have the following behavior:

• A constructor that accepts a month and day as parameters.
• A days_in_month method to return the number of days in that Date object's month.
• A next_day method that changes the state of the Date by advancing it 1 day in time. For example, the next day after 9/19 is 9/20; the next day after 9/30 is 10/1; and the next day after 12/31 is 1/1
• A __str__ method to convert the Date into a string such as "9/19".

For example, it should be possible to use the Date class in the following way at the interpreter:

>>> d = Date(9, 29)
>>> d.month
9
>>> d.day
29
>>> d.days_in_month()
30

>>> d.next_day()
>>> d.month
9
>>> d.day
30
>>> d.next_day()
>>> d.month

10
>>> d.day
1
>>> d.days_in_month()
31
>>> str(d)                         # calls __str__
'10/1'
>>> d.next_day()
>>> str(d)                         # calls __str__
'10/2'

The second file to submit is called birthday2.py. This file should be a client program that uses your Date objects to find out how many days it is until the user's next birthday. The following is a sample run of the birthday2 program:

Please enter today's date:
What is the month? 7
What is the day? 24

Please enter your birthday:
What is the month? 11
What is the day? 6

Your next birthday of 11/6 is in 105 day(s).

Notice that this version of the program doesn't print the absolute day of the year for today or the birthday. You should figure out how many days it is until the user's birthday in a different way. Starting from today, if you walk forward in time until the user's birthday, one day at a time, counting how many steps you took, you'll know how many days it is until the user's next birthday. You don't need to handle the "birthday is tomorrow" case this time; just either print Happy Birthday! or print how many day(s) until the next birthday.

If you want to try out some of Python's other object features, try overloading some operators in your Date class. For example, make it possible to compare dates by implementing a < operator.

The reward for turning in this program is 1 extra late day for use on your normal Java programs, and +1 charisma and 2 saving throws. (Since it's the end of the quarter, getting extra late days is less motivating than it used to be. Mostly you'd just be doing this one for the learning experience.)

Nov 17 2011 9:50 AM

Turn in Python HW6 Python Homework 6 (Mad Libs)

Due Sunday, November 27, 11:30pm.
No late submissions accepted.

You should include the following import statement in your final product. Importing the os modile will let us check to see if files exist.

import os

The os.path.exists method will return True if a file with a given name exists within the working directory.

name = input("Input file name: ")
if os.path.exists(name):
    ...

Nov 10 2011 9:50 AM

Turn in Python HW5 Python Homework 5 (Random Walk or 2-D Guessing Game)

Due Sunday, November 20, 11:30pm.
No late submissions accepted.

Turn in a file randomwalk.py that contains a Python version of your HW5 RandomWalk Java program. Or...

Turn in a file guess2d.py containing a Python guessing game program. In this program you should implement a two-dimensional guessing game that thinks of a random 2-D (x, y) point using integer coordinates somewhere between (1, 1) and (20, 20) inclusive. The user tries to guess the point until getting it right. When the user makes a wrong guess, give a hint of "cold" if the distance from the user's guess to the right point is > 5.0, "warm" if the distance is 1.5 - 5.0 inclusive, and "hot" if the distance is < 1.5. Also tell the user which direction to go to find the right answer using directions like "north" (positive Y) and "east" (positive X). The output should look like this:

This program is a 2-D guessing game.
I will think of a point somewhere between (1, 1)
and (20, 20) and give hints until you guess it.

Guess x/y: 5 7
You're cold. Go south east
Guess x/y: 18 5
You're cold. Go south west
Guess x/y: 15 2
You're warm. Go north west
Guess x/y: 12 4
You're hot! Go west
Guess x/y: 11 4
You got it right in 5 guesses!

Oct 20 2011 9:50 AM

Turn in Python HW4 Python Homework 4 (Birthday)

Due Sunday, October 30, 11:30pm.
No late submissions accepted.

Turn in a file birthday.py containing a Python program that produces output such as the output below. The task is identical to the Java HW4 except that you will also print out the user's astrological sign such as Leo or Virgo. At the bottom of your program, you should print an interesting fact about your own astrological sign, or your sign's current horoscope. Check here to find the date ranges for each sign, or look at the following table:

Sign	Date Range	Absolute Day Range
Aquarius	21 January - 18 February	21 - 49
Pisces	19 February - 20 March	50 - 79
Aries	21 March - 20 April	80 - 110
Taurus	21 April - 21 May	111 - 141
Gemini	22 May - 23 June	142 - 174
Cancer	24 June - 22 July	175 - 204
Leo	23 July - 23 August	205 - 235
Virgo	24 August - 22 September	236 - 266
Libra	23 September - 23 October	267 - 296
Scorpio	24 October - 22 November	297 - 327
Sagittarius	23 November - 21 December	328 - 355
Capricorn	22 December - 20 January	356 - 365 and 1 - 20

The following is an example output from your program:

This program tells you how many days
it will be until your next birthday.

Please enter today's date:
What is the month (1-12)? 7
What is the day   (1-31)? 24
7/24 is day #205 of 365.

Please enter your birthday:
What is the month (1-12)? 11
What is the day   (1-30)? 6
11/6 is day #310 of 365.

Your next birthday is in 105 days.

You are a Scorpio.
<< your sign's fact or horoscope here >>

Oct 13 2011 9:50 AM

Turn in Python HW3 Python Homework 3 (Illusion)

Due Sunday, October 23, 11:30pm.
No late submissions accepted.

Turn in a file illusion.py (lowercase i) containing a Python version of your HW3 Illusion program that produces the output shown below, essentially the same as the Java version but drawn in Python. The window size and coordinates of all drawn figures are the same as in the Java version. As a reference, our sample solution is 40 lines long.

You won't be able to check your output since our Python DrawingPanel doesn't know how to compare images. But we will be lenient on whether the graphical output exactly matches. If you like, you can play around a bit with the exact colors and coordinates to produce a figure you like better, so long as the overall appearance closely matches the above screenshot.

Oct 6 2011 9:50 AM

Turn in Python HW1-2 Python Homework 1-2 (Song or Space Needle)

Due Sunday, October 16, 11:30pm.
No late submissions accepted.

Turn in a file song.py or spaceneedle.py (all lowercase) containing a Python solution to this course's HW1 Song or HW2 Space Needle program, respectively, producing the same output. (You can do both if you want, but you will not receive double credit.)