Python Data Structures and loops

What method would you use to add an element to a list?

• Use the 'append()' method.

• Use the 'extend()' method.

• Use the 'add()' method.

• Use the 'insert()' method.

Which method would you use to retrieve a value from a dictionary using a key?

• Use parentheses to access the value

• Use square bracket notation or the get() method.

• Use the index method to retrieve the value

• Call the dictionary with the key as an argument

What is the output of the following code: for i in range(5): print(i)?

• 10

• 5

• 0 1 2 3 4

• -1

How do you check if a variable is equal to a specific value using if-else?

• if (variable == value) { // code for true } else { // code for false }

• if (variable = value) { // code for true } else { // code for false }

• if (value == variable) { // code for true } else { // code for false }

• if (variable != value) { // code for true } else { // code for false }

What is a nested list and how can you access its elements?

• A nested list is a flat structure; elements can be accessed in any order.

• A nested list is a type of dictionary; access elements using keys.

• A nested list is a single list with no sublists; access elements using a single index.

• A nested list is a list containing other lists; access elements using multiple indices.

How can you remove an item from a list by its value?

• Use list.pop(index) to remove an item by its value.

• Use list.remove(value) to remove an item by its value.

• Use del list[index] to remove an item by its value.

• Use list.clear() to remove all items from the list.

What is the syntax for creating a tuple in Python?

• A tuple is created using square brackets, e.g., [1, 2, 3].

• A tuple is created using angle brackets, e.g., <1, 2, 3>.

• A tuple is created using parentheses, e.g., (1, 2, 3).

• A tuple is created using curly braces, e.g., {1, 2, 3}.

How do you iterate over the keys of a dictionary using a for loop?

• for key in my_dict.items():

• for key in my_dict.values():

• for key in my_dict.keys():

• for key in range(len(my_dict)):

What will be the output of the following code: if x > 10: print('High') else: print('Low')?

• Always 'Low'

• Always 'High'

• Prints 'Error' if x is not a number

• Depends on the value of x

How can you check if a key exists in a dictionary?

• Use 'dictionary.contains(key)'

• Use 'key in dictionary' or 'dictionary.get(key)'.

• Use 'dictionary.has_key(key)'

• Check 'key in list'