Python Roadmap

Sets

Sets are unordered collections of unique elements. They are useful when you want to eliminate duplicates and perform common set operations like union, intersection, and difference. Since sets are unordered, items do not have a fixed position and cannot be accessed using an index.

• Create a Set: Define a set with multiple elements, including duplicates, and observe how duplicates are automatically removed.
• Add and Remove Items: Use add() to insert elements and remove() or discard() to delete them.
• Set Operations: Learn how to perform mathematical set operations like union(), intersection(), and difference().
• Loop Through a Set: Use a loop to iterate over the elements in a set.

Dictionary

Dictionaries are unordered collections of key-value pairs. They allow you to associate a unique key with a value, making them ideal for looking up data efficiently. Keys must be unique and immutable, while values can be of any type.

• Create a Dictionary: Define a dictionary with keys and corresponding values (e.g., name-age pairs).
• Access Values: Use a key to retrieve the associated value using square brackets or the get() method.
• Update and Add Items: Modify existing key-value pairs or add new ones.
• Remove Items: Use methods like pop() or del to remove entries from the dictionary.
• Loop Through a Dictionary: Iterate through keys, values, or both using a for loop with .items(), .keys(), or .values().