Exam 1

Overview of topics

• definition of computer science and applications
• Python interpreter, Python prompt, shell vs. file editor
• comments
• primitive types: integers, floating point numbers, strings, booleans
• naming objects, assignment statements, variables, expressions, keywords
• mathematical operators: +, -, *, /, //, %, **
• relational operators: <, <=, >, >=, ==, !=
• logical operators: and, or, not
• using modules and functions provided by Python
  • print
  • turtle module: how to import, create turtle, use functions on turtle forward, goto, right/left, position, dot, up, down
  • math module: how to import, use functions sin, radians,
  • random module: how to import, use function random
• constructor, dereferencing and dot operator
• functions (function signature, function definition, parameters, how to call/invoke a function, return)
• for loops, 3 ways to call range, loop variable, accumulator pattern
• if statements (if, elif, else), nested if statements
• approximating pi (Archimedes, Leibniz, Wallis, Monte Carlo)

I suggest you review chapters 1 & 2 from our book and all reading quizzes. Our book, homework, and all in-class activities give you many examples that you can work through to practice.

Instructions

The exam will be conducted in-person during class over the period of two class sessions. It is closed book, no calculators, no notes. You will have the duration of class time to finish the exam. It must be completed individually.

Bring your laptop and a charger. You are responsible for ensuring your laptop is properly charged on the day of the exam. You may bring a single one-sided letter-sized sheet of handwritten notes. I suggest you write sparingly on the single note page that you may use, and continue to study vigorously for the exam. You will not have enough time to complete the exam if you rely too heavily on your single sheet of handwritten notes.

Exam 1 - Part A: Moodle Questions (70%)

You will be a spare sheet of paper that has the academic integrity pledge. Print your name at the top. When you are finished with the exam, you will hand in this paper and show me on your laptop that your Moodle quiz has been submitted.

You will open Moodle in class. Moodle is the ONLY program that can be running; no other tabs in your browser, no plug-ins nor browser extensions, no Thonny, nor any other application. Moodle must be the ONLY tab open. Keep your eyes on your laptop only. Any violation of these expectations, such as if any other program or tab is opened except for Moodle, it is grounds for an immediate F on the exam.

Navigate on Moodle to “Exam 1 - Part A”. In class, I will give you the password to open the exam. There are roughly ~35 questions. Some problems are worth more points depending on their level of difficulty and number of subproblems. Questions have the following form.

• Multiple choice / true false. For example,
  • Given a few lines of code which manipulate a variable, what is the value of a variable after all lines are executed?
  • What is the result of the expression ((True or False) and False)?
  • Which of the following is the python prompt?
• Fill-in. For example,
  • What is the value of a variable after all lines are executed?
  • Given the following lines of code, what condition should be inside the if statement?
  • What is the name of a term corresponding to the given definition/description?

Exam 1 - Part B: Thonny Program (30%)

You will be a spare sheet of paper that has the academic integrity pledge. Print your name at the top. When you are finished with the exam, you will hand in this paper and show me on your laptop that your python file has been submitted.

You will open Moodle and Thonny in class. These are the ONLY programs that can be running; no other tabs in your browser, no plug-ins nor browser extensions, no Thonny, nor any other application. Keep your eyes on your laptop only. Any violation of these expectations, such as if any other program is opened, it is grounds for an immediate F on the exam.

There are roughly ~3 programming problems to solve. It is expected that your code will not have any syntax errors, and will follow the implementation instructions. Questions may have the following form.

• Write a few lines of code. For example,
  • Write a for loop to compute the sum of the first 50 numbers (1+2+3+….+49+50).
  • Write code that uses a turtle to draw a square.
• Implement a function. For example,
  • Write a function drawTriangle that takes three parameters - two side lengths and the angle between them - and draws the triangle. Call/invoke the function to test it. Hint: you’ll need to remember the starting location. You can call goto(x,y) on a turtle to move the turtle from one location to another.
  • Write a function drawPolygon(n) that takes one parameter n. The function will create a turtle and use it to draw a polygon that has n sides. Call/invoke your function to test it by drawing a square and a triangle.
  • Write a function called awkwardCount that takes no parameters. The function should use a for loop to iterate through the first 20 integers (1 through 20 inclusive). For each number, it will either print out “uhm”, “err”, or the number. If the number is evenly divisible by 4, it will print “uhm”. If the number is evenly divisible by 5, it will print “err”. Otherwise, it will print out the number. Invoke the function to test it. Your function should use a for loop, selection statement, and the % operator. The expected output is below:

     1
     2
     3
     uhm
     err
     6
     7
     uhm
     9
     err
     11
     uhm
     13
     14
     err
     uhm
     17
     18
     19
     uhm err
    

Exam 2

Overview of topics

• strings (definition, concatenation, repetition, index, length, slice, membership, justification, upper/lower-case, find, index, replace, ord, chr, str, count) and immutability
• encryption and decryption using transposition, substitution, or caesar cipher
• prompting for user input with input function
• lists (definition, initialization, indexing, concatenation, reptition, membership, length, slicing, append, insert, pop, sort, reverse, index, count, remove) and mutability
• dictionaries (definition, keys, values, items, get, membership, index operator, del) and
• tuples (e.g., what is returned from dictionary items)

I suggest you review chapters 3 & 4 from our book, and reading quizzes 8-14. Our book, homework, and all in-class activities give you many examples that you can work through to practice.

Instructions

Instructions are the same as previous exam. The exam will be conducted in-person during class over the period of two class sessions. It is closed book, no calculators, no notes. You will have the duration of class time to finish the exam. It must be completed individually.

Bring your laptop and a charger. You are responsible for ensuring your laptop is properly charged on the day of the exam. You may bring a single one-sided letter-sized sheet of handwritten notes. I suggest you write sparingly on the single note page that you may use, and continue to study vigorously for the exam. You will not have enough time to complete the exam if you rely too heavily on your single sheet of handwritten notes.

Exam 2 - Part A: Moodle Questions (70%)

You will be a spare sheet of paper that has the academic integrity pledge. Print your name at the top. When you are finished with the exam, you will hand in this paper with the time the exam was submitted and show me (or a TA/ZI) on your laptop that your Moodle quiz has been submitted.

You will open Moodle in class. Moodle is the ONLY program that can be running; no other tabs in your browser, no plug-ins nor browser extensions, no Thonny, nor any other application. Moodle must be the ONLY tab open. Keep your eyes on your laptop only. Any violation of these expectations, such as if any other program or tab is opened except for Moodle, it is grounds for an immediate F on the exam.

Navigate on Moodle to “Exam 2 - Part A”. In class, I will give you the password to open the exam. Some problems are worth more points depending on their level of difficulty and number of subproblems; you can see how many points a question is worth in Moodle on the left side. Review your answers before you submit. Questions have the following form.

• Multiple choice / true false / select matching / drag and drop. For example,
  • Given a few lines of code which manipulate a variable, what is the value of a variable after all lines are executed?
  • Circle ALL of the code choices below which would result in the value 5.
  • Circle ALL of the statements below which are True.
  • Which of the following lines of code will open a file for reading?
  • Using the following terms, complete this definition.
• Fill-in. For example,
  • What is the value of a variable after all lines are executed?
  • What will the following lines of code print out?
• Short responses. For example,
  • Consider the following lines of code. What is output? If it would not run for some reason, explain.
  • Write code that will keep asking the user to enter in a number. Once the user enters in a negative number, it should terminate and print the sum of all positive numbers entered. For example, if the user enters 1, 2, 3, and -1, then the program will output 6.

Exam 2 - Part B: Thonny Program (30%)

You will be a spare sheet of paper that has the academic integrity pledge. Print your name at the top. When you are finished with the exam, you will hand in this paper and show me on your laptop that your python file has been submitted.

You will open Moodle and Thonny in class. These are the ONLY programs that can be running; no other tabs in your browser, no plug-ins nor browser extensions, no Thonny, nor any other application. Keep your eyes on your laptop only. Any violation of these expectations, such as if any other program is opened, it is grounds for an immediate F on the exam.

There are roughly ~3 programming problems to solve. It is expected that your code will not have any syntax errors, and will follow the implementation instructions. Questions may have the following form.