Week 2

Question 1

Comments in Python begin with the # character

Answer 1

True

Question 1

When using the camelCase naming convention, the first word of the variable name is written in lowercase and the first characters of all subsequent words are written in uppercase.

Answer 1

True

Question 2

According to the behavior of integer division, when an integer is divided by an integer, the result will be a float.

Answer 2

False

Question 3

Python allows programmers to break a statement into multiple lines.

Answer 3

True

Question 4

Python formats all floating-point numbers to two decimal places when outputting with the print statement.

Answer 4

False

Question 5

A flowchart is a tool used by programmers to design programs

Answer 5

True

Question 6

In Python, math expressions are always evaluated from left to right, no matter what the operators are.

Answer 6

False

Question 7

Computer programs typically perform three steps: input is received, some process is performed on the input, and output is produced.

Answer 7

True

Question 8

In Python, print statements written on separate lines do not necessarily output on separate lines.

Answer 8

True

Question 9

The \t escape character causes the output to skip over to the next horizontal tab.

Answer 9

True

Question 10

Since a named constant is just a variable, it can change any time during a program’s execution.

Answer 10

False

Question 11

What is the informal language, used by programmers use to create models of programs, that has no syntax rules and is not meant to be compiled or executed?
a. flowchart
b. algorithm
c. source code
d. pseudocode

Answer 11

D. pseudocode

Question 12

A(n) __________ is a diagram that graphically depicts the steps that take place in a program?
a. flowchart
b. algorithm
c. source code
d. pseudocode

Answer 12

A. Flowchart

Question 13

The __________ function reads a piece of data that has been entered at the keyboard and returns that piece of data, as a string, back to the program.
a. input()
b. output()
c. eval_input()
d. str_input()

Answer 13

a. input()

Question 14

The line continuation character is a
a. #
b. %
c. &
d. \

Answer 14

d. \

Question 15

Which mathematical operator is used to raise 5 to the second power in Python?
a. /
b. **
c. ^
d. ~

Answer 15

b. **

Question 16

In a print statement, you can set the __________ argument to a space or empty string to stop the output from advancing to a new line.
a. stop
b. end
c. separator
d. newLine

Answer 16

b. end

Question 17

After the execution of the following statement, the variable sold will reference the numeric literal value as (n) __________ data type.
sold = 256.752
a. int
b. float
c. str
d. currency

Answer 17

b. float

Question 18

After the execution of the following statement, the variable price will reference the value __________.
price = int(68.549)
a. 68
b. 69
c. 68.55
d. 68.6

Answer 18

a. 68

Question 19

What is the output of the following print statement?
print ‘I'm ready to begin’
a. Im ready to begin
b. I'm ready to begin
c. I’m ready to begin
d. ‘I'm ready to begin’

Answer 19

c. I’m ready to begin

Question 20

What is the output of the following command, given that value1 = 2.0 and value2 = 12?
print(value1 * value2)
a. 24
b. value1 * value2
c. 24.0
d. 2.0 * 12

Answer 20

c. 24.0

Question 21

What is the output of the following print statement?
print(‘The path is D:\sample\test.’)
a. ‘The path is D:\sample\test.’
b. The path is D:\sample\test.
c. The path is D\sample\test.
d. The path is D:\sample\test.

Answer 21

d. The path is D:\sample\test.

Question 22

The __________ built-in function is used to read a number that has been typed on the keyboard.
a. input()
b. read()
c. get()
d. keyboard()

Answer 22

a. input()

Question 23

Which of the following will display 20%?
a. print(format(20, ‘.0%’)) <enter>
b. print(format(0.2, '.0%')) <enter>
c. print(format(0.2 * 100, '.0%')) <enter>
d. print(format(0.2, '%')) <enter></enter></enter></enter></enter>

Answer 23

b. print(format(0.2, ‘.0%’)) <enter></enter>

Question 24

What symbol is used to mark the beginning and end of a string? a. a slash (/) b. an asterisk (*) c. a quote mark (") d. a comma (,)

Answer 24

c. a quote mark (")

Question 25

To use Python's turtle graphics, you must include which of the following statements in your program? a. import turtle_module b. import turtle_graphics c. import turtle d. import Turtle

Answer 25

c. import turtle

Question 26

The Python turtle is initially positioned in the __________ of a graphics window and it first appears, by default, to be heading __________. a. center, up b. top left corner, east c. bottom left corner, down d. center, east

Answer 26

d. center, east

Question 27

Select all that apply. Which of the following are steps in the program development cycle? a. design the program b. write the code and correct syntax errors c. test the program d. correct logic errors

Answer 27

a. design the program b. write the code and correct syntax errors c. test the program d. correct logic errors

Question 28

Select all that apply. Assume you are writing a program that calculates a user's total order cost that includes sales tax of 6.5%. Which of the following are advantages of using a named constant to represent the sales tax instead of simply entering 0.065 each time the tax is required in the code? a. It will be easier for another programmer who may need to use this code to understand the purpose of the number wherever it is used in the code. b. If the tax amount changes to 7.0%, the value will only have to be changed in one place. c. It allows the end-user to always see the value of the sales tax. d. It avoids the risk that any change to the value of sales tax will be made incorrectly or that an instance of the tax value might be missed as might occur if the number had to be changed in multiple locations.

Answer 28

a. It will be easier for another programmer who may need to use this code to understand the purpose of the number wherever it is used in the code.

Question 29

_______ are notes of explanation that document lines or sections of a program.

Answer 29

comments

Question 30

The % symbol is the remainder operator, also known as the ___________ operator.

Answer 30

modulus

Question 31

A(n) __________ character is a special character that is preceded with a backslash (\), appearing inside a string literal.

Answer 31

escape

Question 32

The __________ specifier is a special set of characters that specify how a value should be formatted.

Answer 32

formatting

Question 33

When applying the .3f formatting specifier to the number 76.15854, the result is __________.

Answer 33

76.159

Question 34

A(n) __________ is a single task that the program must perform in order to satisfy the customer.

Answer 34

software requirement

Question 35

In the expression 12.45 + 3.6, the values to the right and left of the + symbol are the __________.

Answer 35

operands

Question 36

A(n) __________ is a name that represents a value stored in the computer's memory.

Answer 36

variable

Question 37

Python uses __________ to categorize values in memory.

Answer 37

data types

Question 38

When the + operator is used with two strings, it performs string __________.

Answer 38

concatenation