Description
Part 1: Creating a Graphical Python Program
In this part of the assignment, you will create a small graphical Python program. The program will take
two integers as input from the user. Its output will be a “smiley” (loosely defined) centered on the
position specified by the user.
For example, if the user enters 400 and 300 as input then the face should
be centered in the window. If the user enters 0 and 0 then the face should be centered in the upper left
corner of the window, with part of it cut off by the edge of the window. Use the SimpleGraphics library
that you were introduced to previously to complete this task.
Getting Input:
Read your input using the techniques that we have discussed in class. Display a prompt in the terminal
window with a print statement, or by providing a parameter to the input function. Note that the user
will enter their input in the terminal window, not in the graphics window.
Recommended Algorithm:
There are many ways to create the program described in this section of the assignment. If you are
having trouble getting started, you may want to consider creating your solution by using the following
steps:
1. Import the SimpleGraphics library
2. Prompt the user to enter the x-position by displaying a message in the terminal
3. Read the x position from the user as a number
4. Prompt the user to enter the y-position by displaying a message in the terminal
5. Read the y position from the user as a number
6. Draw the face by calling functions in the SimpleGraphics library. These function calls will likely
include calculations involving x and y
Additional Specifications:
Ensure that your program meets all of the following requirements:
• The image generated by your program should be some sort of a face that uses most of the
drawing area.
• The image generated by your program must use a total of at least 4 distinct colors.
• The image generated by your program must use a total of at least 4 different graphics primitives
such as ellipses, polygons, rectangles, text, etc.
• Your program may not load images or use other features that require us to have files beyond
your .py file. Please use standard fonts such as Arial or Times if you choose to include text in
your image.
• Do not resize the window.
• Your program should read only two input values – the x-position and the y-position of the center
of the face.
• Your program must include appropriate comments, including a comment at the top of your file
which includes your name and student number and describes the purpose of your program.
There should also be comments within the program that indicate which lines of code draw
different parts of the face (eyes, nose, hair, ears, mouth, etc.).
• You do not need to replace numbers used to control the positions of shapes with named
constants.
• Do not display your student number as part of the image.
Part 2: Information and Data
Solve the following problems, and submit your answers on paper. It is not necessary to type your
answers as long as your work is neat and easy to read.
An electronic submission is not required for this
part of the assignment.
1: [5 marks] Convert the following base 10 numbers to binary:
a) 86
b) 763
c) 3667
d) 27538
e) 82917373
2: [5 marks] Repeat question 1, converting each base 10 value to base 8:
3: [5 marks] Repeat question 1, converting each base 10 value to hexadecimal:
4: [5 marks] Repeat question 1, converting each base 10 value to base 5:
5: [5 marks] Convert the following base 2 numbers to decimal:
a) 10111
b) 111010
c) 1010110
d) 10101101111
e) 1011100110111011110
6: [5 marks] Convert the following numbers:
a) 3232 base 4 to base 10
b) 2754 base 8 to base 10
c) 100 base 16 to base 10
d) 100 base 7 to base 10
e) 7654 base 8 to base 10
7: [8 marks] Convert the following numbers:
a) E2 base 16 to base 6
b) 1111001111 base 2 to base 3
c) BAD base 14 to base 20
d) 5345 base 6 to base 16
8: [12 marks] Answer the following questions. Your response to each question should be brief (three
sentences or less).
a) In ASCII, what value represents the letter A?
b) Is the value assigned to the letter A arbitrary, or was it selected for a good reason? Justify your
answer.
c) In ASCII, what value represents the letter w?
d) Is the value assigned to the letter w arbitrary, or was it selected for a good reason? Justify your
answer.
e) In ASCII, what value represents the character ‘7’?
f) Is the value assigned to the letter 7 arbitrary? Justify your answer.
g) In ASCII, what value represents the character ‘+’?
h) Is the value assigned to the ‘+’ character arbitrary? Justify your answer.
i) What is UTF-8?
j) What advantages does UTF-8 have compared to ASCII?
k) What disadvantages does UTF-8 have compared to ASCII?
l) Why are floating point numbers only an approximation of real numbers?
Grading:
Part one of the assignment will be graded out of 50, with the grade based on the program’s level of
functionality and conformance to the specifications. A small number of bonus marks may be awarded to
particularly impressive submissions. Part two of the assignment will be graded based on the number of
correct answers provided.
The total mark achieved for the assignment will be translated to a letter grade using the following table:
Mark Letter Grade
100+ A+
95 to 99 A
90 to 94 A87 to 89 B+
83 to 86 B
80 to 82 B77 to 79 C+
73 to 76 C
70 to 72 C65 to 69 D+
60 to 64 D
0 to 59 F
As a reminder, the University of Calgary assigns the following meaning to letter grades:
A: Excellent – Superior performance showing a comprehensive understanding of the subject matter
B: Good – Clearly above average performance with generally complete knowledge of the subject matter
C: Satisfactory – Basic understanding of the subject matter
D: Minimal Pass – Marginal performance; Generally insufficient preparation for subsequent courses in
the same subject
F: Fail – Unsatisfactory performance