Python Chapter 2

Which mathematical operator is used to raise 5 to the second power in Python?

**

What is the output of the following command, given that value1 = 2.0 and value2 = 12? print(value1 * value2)

24.0

After the execution of the following statement, the variable price will reference the value ________. price = int(68.549)

68

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

76.159

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

False

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

False

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

False

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

False

What is the output of the following print statement? print 'I\'m ready to begin'

I'm ready to begin

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?

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

What is the output of the following print statement? print('The path is D:\\sample\\test.')

The path is D:\sample\test.

A flowchart is a tool used by programmers to design programs.

True

Comments in Python begin with the # character.

True

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

True

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

True

Python allows programmers to break a statement into multiple lines.

True

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

True

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.

True

The line continuation character is a

\

What symbol is used to mark the beginning and end of a string?

a quote mark (")

The Python turtle is initially positioned in the ________ of a graphics window and it first appears, by default, to be heading ________.

center, east

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

comments

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

concatenation

Select all that apply. Which of the following are steps in the program development cycle?

correct logic errors, write the code and correct syntax errors, test the program, design the program

Python uses ________ to categorize values in memory.

data types

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.

end

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

escape

After the execution of the following statement, the variable sold will reference the numeric literal value as (n) ________ data type. sold = 256.752

float

A(n) ________ is a diagram that graphically depicts the steps that take place in a program?

flowchart

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

formatting

To use Python's turtle graphics, you must include which of the following statements in your program?

import turtle

The ________ built-in function is used to read a number that has been typed on the keyboard.

input()

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.

input()

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

modulus

A ________ is a name that represents a value the cannot be changed during a program's execution.

named constant

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

operands

Which of the following will display 20%?

print(format(0.2, '.0%'))

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?

pseudocode

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

software requirement

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

variable