Python Chapter 03 multiple choice

____ is the format operator.

%

What will the following loop print on the screen? for count in range(4): print count,

0 1 2 3

A ____ must follow the else in an if-else statement.

:

In Python, a ____ ends the loop header.

:

The ____ comparison operator is used for equality.

==

The ____ data type consists of only two data values—true and false.

Boolean

To halt a loop that appears to be hung during testing, type ____ in the terminal window or in the IDLE shell.

Control+c

The logical operators have a higher precedence than the ____ operator(s).

assignment

Using the ____ statement within the body of a loop will cause an exit from the loop.

break

The not operator has a lower precedence than the ____ operator(s).

comparison

Errors to rule out during testing the while loop include an incorrectly initialized loop control variable, failure to update this variable correctly within the loop, and failure to test it correctly in the ____ condition.

continuation

Loops that count through a range of numbers are also called ____ loops.

count-controlled

The first line of code in a loop is sometimes called the loop ____.

header

In a loop, each repetition of the action is known as a pass or a(n) ____.

iteration

Off-by-one errors in loops are ____ errors.

logic

The condition in the if-else statement ____ be a Boolean expression.

must

The if statement is also called a ____ selection statement.

one-way

The ____ operator returns False if and only if both of its operands are false, and returns True otherwise.

or

Python's ____ module supports several ways to generate random numbers.

random

An example of conditional iteration is when a program's input loop accepts values until the user enters a special value or a ____ terminates the input.

sentinel

In the expression (A or B), if A is true, then so is the expression, and there is no need to evaluate B. This approach, in which evaluation stops as soon as possible, is called ____ evaluation.

short-circuit

In ____ format, numbers and other information are aligned in columns that can be either left-justified or right-justified.

tabular

The ____ argument of Python's range function specifies a step value.

third

"%6s" % "four" right-justifies the string by padding it with ____.

two spaces to its left

The if-else statement is also called a ____ selection statement

two-way