Question Bank: Working with Lists and Dictionaries

Which of the following is the correct syntax to create a list in Python?

What will be the output of the following code: print([1, 2, 3] + [4, 5])?

What does the index -1 refer to in a list?

Which function would you use to find the largest number in a list?

If list1 = [10, 20, 30, 40] and you execute list1[2] = 100, what will list1 look like?

What is the outcome of executing sorted([3, 1, 2])?

Which method would you use to remove the first occurrence of a value from a list?

What will be the output of the code: print([1, 2] * 3)?

If myList = [5, 10, 15] and you execute myList.append(20), what will myList look like?

What is the error in running this code: print([1, 2, 3][5])?

What would be the result of executing: list1 = [1, 2, 3], list1 += [4, 5]?

How would you create a list containing the first five square numbers?

Which of the following statements is true about Python lists?

If a list is defined as list1 = [1, 2, 3], which statement will create a copy of this list?

What is the result of executing: [1, 2, 3] + [4] * 2?

What is the correct syntax to create a list in Python?

How do you access the first element of a list named 'myList'?

Which of the following is a valid list in Python?

What will the expression list1[2] return for the list list1 = [2, 4, 6, 8]?

What will be the output of len(list3) if list3 = [100, 23.5, 'Hello']?

What is the output of list1[-1] if list1 = [10, 20, 30]?

What type of data can be stored in a Python list?

Which command would throw an 'IndexError' for the list list1 = [0, 1, 2]?

If list4 contains elements [['Math', 101], ['English', 102]], what does list4[0][1] return?

Which of the following statements will correctly append an item to a list 'myList'?

What does the expression list1[1:4] return for list1 = [0, 1, 2, 3, 4, 5]?

If list5 contains [1, 2, 3, 4], what will list5[-2] return?

What will be the output of the expression myList = [1, 2, 3]; myList * 2?

In which situation would using negative indexing be beneficial?

If you have the following list: myList = [2, 4, 6, 8, 10], what would be the value of myList[1:3]?

Given a list defined as list = [5, 3, 9, 1], which method is used to sort this list in ascending order?

What will be the output of the following code? list1 = [1, 2, 3, 4, 5] for item in list1: print(item)

Which index will return the last element of the list in Python code? list1 = [10, 20, 30, 40]

How can you access the third element in a list named 'my_list'?

What does the len() function return for list1 = [5, 10, 15]?

What will be the output of: list1 = [1, 2, 3] print(list1[1:3])?

Which of the following correctly initializes an empty list in Python?

How can you iterate over the elements of a list named myList using a for loop?

What will be the output of: list1 = [1, 2, 3] for i in range(len(list1)): print(list1[i])?

If list1 = [10, 20, 30] and you execute list1.append(40), what will list1 become?

What is the result of list1 = [1, 2, 3, 4] list1[1:3]?

How do you reverse the list called myList?

Given the list: myList = [5, 'test', 12.3], what will myList[1] return?

What error do you encounter when trying to access an index that exceeds the list size?

Which method can insert an element at a specific index of a list?

If you have a list of numbers, how do you access the second last number?

What will the output be of: print('List:', list1[::-1]) where list1 = [1, 2, 3]?

What will be the result of the following code? list1 = [1, 2, 3]; list1.append(4); print(list1)

Which function is used to determine the number of elements in a list?

What is the output of the code: list1 = [5, 10, 15]; list1.insert(1, 7); print(list1)?

Which of the following methods can be used to add elements from one list to another?

What will the command sorted([3, 1, 2]) return?

Which method would you use to remove an item at a specific index from a list?

If list1 = [1, 2, 3, 4, 5], what does list1[-1] return?

Consider list1 = [10, 20, 30, 40]; what will be the result of list1[1:3]?

What will the output of 'list1 = [1, 2, 2, 3]; list1.count(2)' be?

Given list2 = [6, 7, 8]; what does list2 * 2 produce?

What will the command 'myList = [3,2,1]; myList.reverse()' do?

If list1 = [3, 2, 4], what does max(list1) return?

What is the output of list1 = [1, 2, 3]; del list1[1]; print(list1)?

How do you create an empty list?

What happens if you try to access an index that is out of range?

Which operator is used to concatenate two lists?

Which method returns the number of key-value pairs in a dictionary?

What will dict1.keys() return for dict1 = {'A': 1, 'B': 2}?

What does dict1.get('key') return if 'key' does not exist in dict1?

Which method would you use to update a dictionary with another dictionary's values?

What will be the output of 'dict1 = {1: 'one', 2: 'two'}; dict1[3]'?

To remove all items from a dictionary, which method is used?

What data type does dict1.items() return?

What will be the result of executing dict1.update({'A': 1}) when dict1 = {'A': 2}?

Which of the following will correctly create a dictionary?

If dict1 = {'A': 1, 'B': 2} and you perform dict1.pop('B'), what will dict1 become?

Which method will you use to get values from a dictionary into a list format?

What does dict1['key'] return when 'key' is not present in dict1?

In a dictionary, how can you retrieve a default value if a key is not found?

Which method would clear all items from dict1?

What does dict1.popitem() return?

Which method converts a sequence of key-value pairs into a dictionary?

What is the correct syntax to create an empty dictionary in Python?

Which statement about dictionary keys in Python is correct?

Given the dictionary dict3 = {'a':1, 'b':2, 'c':3}, what is dict3['b']?

What will the following code output? dict3 = {'x': 1, 'y': 2}; print(dict3.get('z', 0))

How can you add a new key-value pair to an existing dictionary?

What type of data structure is a dictionary in Python?

In the dictionary dict2 = {'name': 'Alice', 'age': 25}, which of the following expressions accesses the name?

If a dictionary has duplicate keys, what happens when it is created?

How can you delete a key-value pair from a dictionary?

What will be returned when you call dict2 = {'key': 'value'}; dict2.keys()?

Which of the following will raise a KeyError?

Given a dictionary, how would you change the value associated with an existing key?

What is the output of the expression len({'a': 1, 'b': 2})?

Which of the following represents a valid dictionary with mixed value types?

If you want to retrieve a value and handle the case where the key might not exist, which method would you use?

Which of the following statements is true regarding dictionary items?

What is the primary way to traverse a dictionary in Python?

Given the dictionary `dict1 = {'a': 1, 'b': 2, 'c': 3}`, what will be printed by the following code? `for k, v in dict1.items(): print(k, v)`

What happens if you try to access a key that does not exist in a dictionary using the `get` method?

In a dictionary, how can you find the number of key-value pairs?

What will the statement `dict1.update({'d': 4})` do if `dict1` is originally `{'a': 1, 'b': 2}`?

When using the `keys()` method on a dictionary, what is returned?

What is the output of the following code? `dict1 = {'a': 1, 'b': 2}; print(dict1.get('c'))`

Which of the following will give you both the keys and values of a dictionary in one structure?

How would you clear all items from a dictionary `dict1`?

If `dict1 = {'x': 1, 'y': 2, 'z': 3}`, what will `for k in dict1:` output?

If you want to merge two dictionaries `dict1 = {'a': 1}` and `dict2 = {'b': 2}`, which method would you likely use?

What is the output of `dict1 = {'a': 1, 'b': 2}; print(dict1.get('b', 3))`?

What method would you use to retrieve all keys from a dictionary named 'data'?

Which of the following methods returns only the values of a dictionary?

If you want to check the existence of the key 'name' in the dictionary 'user', which statement would you use?

If a dictionary has nested dictionaries, which method could help to flatten or access inner values efficiently?

Which method adds a new key-value pair to an existing dictionary in Python?

When traversing a dictionary, what common error might you encounter if you modify the dictionary during iteration?

What will happen if you try to access a key that does not exist in a dictionary using the get() method?

What will be the output of the following code if executed? `dict1 = {'a': 1, 'b': 2}; for key in dict1.keys(): dict1[key] += 1; print(dict1)`?

If you delete a key 'age' from a dictionary, how can you confirm it has been removed?

What is the output of 'len({})' in Python?

How would you modify the value of an existing key in a dictionary?

Which function will return a list of all values in a dictionary called 'grades'?

What will be the output of the following code: 'd = {1: 'a', 2: 'b'}; print(d[1])'?

What is the main characteristic of a dictionary in Python?

You have a dictionary myDict and want to remove the item with key 'x'. Which of the following is correct?

What will 'd.get(5, 'Not Found')' return if key 5 does not exist?

How can you convert the keys of a dictionary named 'sampleDict' to a list?

In what scenario would using preset default values with get() be most useful?

How would you efficiently clear all items from a dictionary named 'cache'?

What does the len() function return when applied to a list?

Which method would you use to add an element at index 2 of a list?

What does the pop() method do when called with no arguments?

If list1 = [10, 20, 30, 20], what will list1.count(20) return?

What is the result of executing list1.reverse() on the list [5, 3, 8]?

When would you use the extend() method over append()?

What will result from executing list1.remove(10) on the list [10, 20, 10]?

Which method is used to determine the first index of a specific element in a list?

Which of the following methods does not modify the original list?

If list1 = [2, 3, 5], what will list1[1 + 1] return?

What will be the output of sorting the list ['d', 'c', 'b', 'a']?

Which of the following methods can cause a ValueError if the element is not found?

What will be the output of the following code: list1 = [1, 2, 3]; list1.sort(reverse=True)?

Which method removes all occurrences of a specified value from a list?

If you want to combine two lists into one list, which method would you use?