Fall Semester Exam Review (Units 1, 2)

Front

Enter the name of the variable used in the following code.

Back

color

Answer explanation

Explanation: Variables are used to store values. In general, you can recognize a variable as a word that is written in code without quotes (that is not a special keyword).

Front

An argument is... (circle one)

Back

Information passed to a function to make it work, Located inside the parentheses in a function call, Expected to be a specific data type based on the function being used, All of the above

Answer explanation

Explanation: Arguments are values that you pass to a function. Most functions expect a specific number of arguments, and a specific type for each argument, which can be found in accompanying documentation.

Front

What action is the + operator performing in the following code?
max = int(input("Enter the maximum value: "))
min = int(max / 2)
print("For a minimum we will use: " + str(min))

Back

Concatentation

Answer explanation

Explanation: The + operator can be used to perform addition when placed between two numbers, or concatenation when placed between two strings.

Front

What will be the output of this program? print("Goodbye") print("Moon")

Back

Two lines reading Goodbye and Moon

Front

What value is in the variable `x` after this code runs?

x = 0
y = 10
if x == y:
    x = 100

Back

0

Answer explanation

Explanation: In this case the answer to 'are x and y equal?' is False, and so the line inside the if-statement will not run, meaning x will stay the same.

Front

Which of the following is NOT true about conditions? They are boolean expressions, They always produce the value True or False, You can only have one condition per conditional
, They come between the keyword and colon in a conditional clause

Back

You can only have one condition per conditional

Answer explanation

Explanation: The condition is the part of the if-statement or other conditional clause that asks a yes-or-no question. For a conditional with multiple clauses, each clause will have its own condition, except for `else`.

Front

What value is in the variable `y` after this code runs?

Back

100

Answer explanation

Explanation: A nested conditional is only tested if the outer conditional is True. In this case, x is less than y, so the first condition is True. Then we check the inner conditional. x is NOT less than 0, so we skip the block of the inner conditional, and the final value of y is 100.

Front

What is the chance you will see bigfoot? Give your answer as a fraction using the / symbol.

Back

1/100

Answer explanation

Explanation: The Weighted Choice technique works by picking more numbers than you have choices. Then several numbers will result in the same outcome, making that outcome more likely.

Front

How do you put an if-statement inside another if-statement (nesting)?

Back

Indent the second conditional underneath the first one

Answer explanation

Explanation: You can tell the nesting level of a statement based on its indentation. Each new level of indentation means the code is "inside" of the unindented line above it.

Front

Which of the following chained comparison ranges includes the number 16? 10 < x < 16, 10 < x < 20, 16 < x < 20, All of the above

Back

10 < x < 20

Answer explanation

Explanation: Chained comparisons can be used to test if a number falls within a given range. In this case, the condition is checking whether the number is between 10 and 20, which includes 16. The other two do not include 16 because they use the strictly less than comparison.