AEM 249 Lecture 7

What does the function len(set) do in Python sets?

• Clears all elements from the set

• Removes a random element from the set

• Finds the length of the set

• Adds elements in set2 to set1

Which of the following operations returns a new set containing only the elements in common between set and all provided sets?

• set.union(set_a, set_b, set_c, ...)

• set.difference(set_a, set_b, set_c, ...)

• set.intersection(set_a, set_b, set_c, ...)

• set_a.symmetric_difference(set_b)

What is the purpose of the del keyword in Python dictionaries?

• Adds elements in set2 to set1

• Removes a random element from the set

• Clears all elements from the set

• Removes entries from a dictionary

Which of the following is a mutable container with ordered elements?

• int

• float

• list

• tuple

What is the purpose of the set type in Python?

• Stores unique elements

• Stores text

• Stores variable-width integers

• Stores key-value associated elements

What is the only mapping type in Python?

• dict

• list

• float

• int

What is the purpose of the tuple type in Python?

• Stores variable-width integers

• An immutable container with ordered elements

• Stores text

• Stores unique elements

What is the purpose of the string type in Python?

• Stores variable-width integers

• Stores text

• An immutable container with ordered elements

• Stores unique elements

What is the purpose of the list type in Python?

• An immutable container with ordered elements

• Stores variable-width integers

• Stores text

• A mutable container with ordered elements

What is the purpose of the float type in Python?

• A mutable container with ordered elements

• An immutable container with ordered elements

• Stores floating-point numbers

• Stores variable-width integers