Practical Data Science using Python - Python Dictionaries 2

The video tutorial explains various functions used in Python dictionaries, including items, keys, values, pop item, and set default. It describes how each function operates, their effects on the dictionary, and how to iterate through a dictionary using a for loop. The tutorial provides examples to illustrate the use of these functions, highlighting the behavior of each function when applied to a dictionary.

What does the 'items' function return when applied to a dictionary?

• A single key-value pair

• A set of key-value pairs

• A list of values

• A list of keys

Which function would you use to get all the keys from a dictionary?

• items

• popitem

• keys

• values

What does the 'popitem' function do in a dictionary?

• Returns all key-value pairs

• Removes and returns the last inserted key-value pair

• Inserts a new key-value pair

• Removes a specific key-value pair

How does the 'setdefault' function behave if the key already exists in the dictionary?

• It returns the existing value without updating

• It updates the value of the key

• It removes the key-value pair

• It inserts a new key-value pair

When iterating through a dictionary, what does the loop variable capture?

• The index of the key-value pair

• The key-value pair

• Only the value

• Only the key