Question 1

What part of the loop comprises the statements to be executed?

Accepted Answer

A)   The loop header.
B)   The loop body.
C)   The loop end.
D)   The loop tail.E) All of the above
F) None of the above

Question 2

You are running a Python script and suspect that the script has entered an infinite loop. What key combination can you use to halt the loop?

Accepted Answer

A)   CTRL + Esc
B)   CTRL + c
C)   Alt + b
D)   CTRL + BreakE) C) and D)
F) A) and B)

Question 3

The not operator has a lower precedence than the and and or operators.

Accepted Answer

A) True 
 B)False

Question 4

What statement regarding precedence of operators is accurate?

Accepted Answer

A)   The assignment operator (=)  is higher in precedence than exponentiation (**) .
B)   The logical conjunction (and)  is higher in precedence than the logical negation (not) .
C)   The comparison operators (==, !=, , =)  are higher in precedence than the assignment operator (=) .
D)   The addition and subtraction operators (+, -)  are lower in precedence than the logical conjunction operator (and) .E) A) and D)
F) C) and D)

Question 5

When the step argument is a negative number, the range function generates a sequence of numbers from the first argument down to the second argument plus 1.

Accepted Answer

A) True 
 B)False

Question 6

Given the following statement: "%4d" % var1, which of the following is accurate?

Accepted Answer

A)   The variable var1 must be an integer value.
B)   The variable var1 must be a string value.
C)   The variable var1 will be in octal format.
D)   The variable var1 will be formatted regardless of type.E) All of the above
F) C) and D)

Question 7

Some computer scientists argue that a while True loop with a delayed exit violates the spirit of the while loop.

Accepted Answer

A) True 
 B)False

Question 8

The comparison operators are applied after addition but before assignment.

Accepted Answer

A) True 
 B)False

Question 9

The not operator expects a single operand and returns its logical negation, True, if it's false, and False if it's true.

Accepted Answer

A) True 
 B)False

Question 10

The simplest form of selection is the if-else statement.

Accepted Answer

A) True 
 B)False

Question 11

4 != 4 evaluates to True.

Accepted Answer

A) True 
 B)False

Question 12

What is NOT a Boolean or logical operator used in the Python language?

Accepted Answer

A)   and
B)   or
C)   not
D)   xorE) A) and B)
F) A) and C)

Question 13

What scenario would it make logical sense to use a multi-way selection statement for?

Accepted Answer

A)   You need to convert numeric grades to letter grades.
B)   You need to test if the value of A is larger than B.
C)   You need to determine if a number is positive or negative.
D)   You need to test if a variable is True or False.E) A) and C)
F) B) and C)

Question 14

What function call will generate a random number in the range of 1 through 6 using the random module?

Accepted Answer

A)   random.randnum(1, 6) 
B)   random.randint(range(1-6) ) 
C)   random.randint(1, 6) 
D)   random.random(1, 6) E) A) and B)
F) A) and C)

Question 15

Conditional iteration requires that a condition be tested within the loop to determine whether the loop should continue.

Accepted Answer

A) True 
 B)False

Question 16

The Boolean data type is named for the twentieth-century British mathematician George Boole.

Accepted Answer

A) True 
 B)False

Question 17

Although the while loop can be complicated to write correctly, it is possible to simplify its structure and thus improve its readability.

Accepted Answer

A) True 
 B)False

Question 18

The assignment symbol can be combined with the arithmetic and concatenation operators to provide augmented assignment operations.

Accepted Answer

A) True 
 B)False

Question 19

What comparison operator is used to test whether an expression does NOT equal another expression?

Accepted Answer

A)   -=
B)   !=
C)   /=
D)   _=E) A) and B)
F) All of the above

Question 20

What statement should you use to print the value of total with a precision of 5 digits?

Accepted Answer

A)   print("The total is %5." % total) 
B)   print("The total is %0.5d" % total) 
C)   print("The total is %f" % float(total, 5) ) 
D)   print("The total is %0.5f" % total) E) A) and D)
F) B) and D)

Exam 3: Loops and Selection Statements

Conditional iteration requires that a condition be tested within the loop to determine whether the loop should continue.

Correct AnswerverifiedShow Answer

Some computer scientists argue that a while True loop with a delayed exit violates the spirit of the while loop.

Correct AnswerverifiedShow Answer

What statement should you use to print the value of total with a precision of 5 digits?

Correct AnswerverifiedShow Answer

Given the following statement: "%4d" % var1, which of the following is accurate?

Correct AnswerverifiedShow Answer

What part of the loop comprises the statements to be executed?

Correct AnswerverifiedShow Answer

When the step argument is a negative number, the range function generates a sequence of numbers from the first argument down to the second argument plus 1.

Correct AnswerverifiedShow Answer

You are running a Python script and suspect that the script has entered an infinite loop. What key combination can you use to halt the loop?

Correct AnswerverifiedShow Answer

4 != 4 evaluates to True.

Correct AnswerverifiedShow Answer

The assignment symbol can be combined with the arithmetic and concatenation operators to provide augmented assignment operations.

Correct AnswerverifiedShow Answer

The not operator expects a single operand and returns its logical negation, True, if it's false, and False if it's true.

Correct AnswerverifiedShow Answer

The comparison operators are applied after addition but before assignment.

Correct AnswerverifiedShow Answer

The Boolean data type is named for the twentieth-century British mathematician George Boole.

Correct AnswerverifiedShow Answer

The not operator has a lower precedence than the and and or operators.

Correct AnswerverifiedShow Answer

What function call will generate a random number in the range of 1 through 6 using the random module?

Correct AnswerverifiedShow Answer

Although the while loop can be complicated to write correctly, it is possible to simplify its structure and thus improve its readability.

Correct AnswerverifiedShow Answer

What statement regarding precedence of operators is accurate?

Correct AnswerverifiedShow Answer

What comparison operator is used to test whether an expression does NOT equal another expression?

Correct AnswerverifiedShow Answer

The simplest form of selection is the if-else statement.

Correct AnswerverifiedShow Answer

What is NOT a Boolean or logical operator used in the Python language?

Correct AnswerverifiedShow Answer

What scenario would it make logical sense to use a multi-way selection statement for?

Correct AnswerverifiedShow Answer

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