Chapter 4 python

Analyze the following code: Code 1: if number % 2 == 0: even = True else: even = False Code 2 :even = number % 2 == 0

Both Code 1 and Code 2 are correct, but Code 2 is better.

Which of the following is the correct expression that evaluates to True if the number x is between 1 and 100 or the number is negative?

(ch >= 'A' and ch <= 'Z') ('A' <= ch <= 'Z')

The "less than or equal to" comparison operator is __________.

<=

Which of the following operators are right-associative.

=

The equal comparison operator is __________.

==

Analyze the following code: even = False if even = True: print("It is even!")

The program has a syntax error in line 2 if even = True is not a correct condition. It should be replaced by if even == True: or if even:.

What is the value of the following expression? True or True and False

True

Which of the Boolean expressions below is incorrect?

True and 3 => 4 !(x > 0) and (x > 0) (x != 0) or (x = 0)

The word True is ________.

a Python keyword a Boolean literal

random.random() returns ____________.

a float number i such that 0 <= i < 1.0

The following code displays ___________. temperature = 50 if temperature >= 100: print("too hot") elif temperature <= 40: print("too cold")else: print("just right")

just right

Which of the following is equivalent to x != y?

not (x == y) x > y or x < y

Suppose x = 1, y = -1, and z = 1. What will be displayed by the following statement? if x > 0: if y > 0: print("x > 0 and y > 0") elif z > 0: print("x < 0 and z > 0")

nothing displayed

To generate a random integer between 0 and 5, use ________________.

random.randint(0, 5) random.randrange(0, 6)

The __________ function immediately terminates the program.

sys.exit()

Assume x = 4 and y = 5, Which of the following is true?

x != 5

Given |x - 2| <= 4, Which of the following is true?

x - 2 <= 4 and x - 2 >= -4

Given |x - 2| >= 4, Which of the following is true?

x - 2 >= 4 or x - 2 <= -4

Assume x = 4 and y = 5, Which of the following is true?

x < 5 or y < 5

What is the output of the following code? x = 0 if x < 4: x = x + 1 print("x is", x)

x is 1

Which of the following statements are True?

(x > 0 and x < 10) is same as (x > 0 and x < 10) (x > 0 or x < 10 and y < 0) is same as (x > 0 or (x < 10 and y < 0))

The order of the precedence (from high to low) of the operators +, *, and, or is:

*, +, and, or

What is y after the following statement is executed? x = 0 y = 10 if x > 0 else -10

-10

random.randint(0, 1) returns ____________.

0 or 1

What will be displayed by the following code? ch = 'F' if ch >= 'A' and ch <= 'Z': print(ch)

F

What will be displayed by the following code? isCorrect = False print("Correct" if isCorrect else "Incorrect")

Incorrect

Analyze the following code.even = False if even: print("It is even!")

The code displays nothing.

Suppose isPrime is a boolean variable, which of the following is the correct and best statement for testing if isPrime is true.

if isPrime:

Which of the following code displays the area of a circle if the radius is positive.

if radius > 0: print(radius * radius * 3.14159)