Django3- Dictionaries

The video tutorial introduces Python dictionaries, explaining their key-value structure and how they differ from lists. It covers creating dictionaries using curly brackets, adding entries, and accessing values using keys. The tutorial also demonstrates modifying dictionaries by adding, updating, and deleting entries. It highlights that dictionaries do not maintain order and compares them to lists, emphasizing their flexibility in storing different data types. The lesson concludes with a brief mention of upcoming topics like classes and Django.

What is the primary difference between a dictionary and a list in Python?

• Dictionaries are mutable, while lists are immutable.

• Dictionaries are faster than lists for all operations.

• Dictionaries can only store strings, while lists can store any data type.

• Dictionaries store data in a key-value format, while lists store data in an ordered sequence.

How do you access a value in a dictionary using a key?

• Using square brackets around the key.

• Using curly brackets around the key.

• Using parentheses around the key.

• Using angle brackets around the key.

What happens to the order of elements in a dictionary when you print it?

• The order of elements is not guaranteed and can vary.

• The elements are printed in alphabetical order of keys.

• The elements are always printed in the order they were added.

• The elements are printed in reverse order of addition.

Which of the following is a valid way to delete an entry from a dictionary?

• Use the 'remove' method with the key.

• Use the 'delete' keyword with the key.

• Use the 'del' keyword with the key.

• Use the 'pop' method with the key.

Can a dictionary in Python have keys and values of different data types?

• Values must be integers, but keys can be of any data type.

• No, all keys and values must be of the same data type.

• Yes, keys and values can be of any data type.

• Keys must be strings, but values can be of any data type.