chapter 2 CSC121

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

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

Comments

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

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

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

a quote mark (") Correct

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

center, east

When the + operator is used with two strings, it performs string_____

concatenation

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

constant

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

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

formatting

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

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%')) <enter> Correct

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