Python: Dictionaries and Sets

Included in the course

What you'll learn

• Understand the structure of dictionaries
• Use dictionaries, create and change them
• Create and manipulate sets
• Process dictionaries with keys, values, and items iterators

Description

In this course, you will study dictionaries (collections of key-value pairs) and sets (a related type of collections). You will learn their internal structure and the syntax for creating and modifying them. As a result, you will learn how to create and copy data from dictionaries and manipulate dictionaries with keys, values, and item iterators. You will learn how to perform various operations on sets: union, difference, intersection, and subset checking. In this course, you will gain the skills necessary to work with hash structures in Python, which you can use to describe entities in any domain. To make learning easier, you should complete the Python Fundamentals and Python Lists courses before taking this course.

Course program

• 1

  About the course

  Getting to know the goals, objectives, and theme of the course

  theory
• 2

  Syntax

  Learning how to declare dictionaries, access elements, and iterate keys

  theory
• 3

  Changing data in the dictionary

  Learning how to change items and add data from one dictionary to another

  theory
• 4

  Initializing new values and defaultdicts

  Introducing the `defaultdict` dictionaries

  theory
• 5

  Multitudes

  Introducing sets as a new data type

  theory
• 6

  Changing sets

  Learning how to change, clear and copy sets

  theory
• 7

  Operations on sets

  Finding out how to compare sets and what you can get from this comparison

  theory
• 8

  Methods of set objects

  Learning how to modify a set in place based on data from another set

  theory
• 9

  Hash tables

  Delving into the actual structure of dictionaries

  theory
• 10

  Additional resources

  Some materials the Hexlet team have picked up. This will give you a more in-depth understanding of the topic