Python_Chapter 3_Part One

Which type of expression has a value of either true or false?

• relational

• binary

• Boolean

• if-else

Which of the following creates a Boolean variable?

• flag = True or False

• flag = True

• if flag == True:

• flag == "False"

The and operator has

• higher precedence than the or operator, but lower precedence than the not operator

• higher precedence than the or and not operators

• lower precedence than the or operator, but higher precedence than the not operator

• lower precedence than the or and not operators

Which of the following in this expression is evaluated first?

• age >= 65

• age <= 18

• status == "retired"

• age >= 65 or age <= 18

Which of the following in this expression is evaluated first?

• age >= 65

• status == "retired"

• age < 18

• status == "retired" or age < 18

When two strings are compared, they are evaluated based on the _________________ of the characters in the string.

• uppercase/lowercase sequence

• alphabetical order

• sort sequence

• string method

To compare two strings with mixed uppercase and lowercase letters, a programmer can first use the

• upper() method to convert the first character in each string to uppercase.

• lower() method to convert all characters in each string to lowercase.

• lower() method to convert all characters after the first character in each string to lowercase.

Python will sort the strings that follow in this sequence: Peach peach 1peach 10Peaches

• Peach, peach, 1peach, 10Peaches

• 1peach, 10Peaches, Peach, peach

• 10Peaches, 1peach, Peach, peach

• 10peaches, 1peach, peach, Peach

In a while loop, the Boolean expression is tested

• before the loop is executed

• after the loop is executed

• both before and after the loop is executed

• until it equals the current loop value

For a for loop that uses a range() function is executed

• once for each integer in the collection returned by the range() function

• until the for condition is equal to the value returned by the range() function

• while the for condition is less than the value returned by the range() function

• until the range() function returns a false value