Gain insights into Python by exploring basic to advanced concepts, including loops, classes, and GUIs with Tkinter. Delve into testing and become a productive Python programmer.

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In this course, you will get a comprehensive overview of Python. You will start by laying the foundation and learning the introductory topics like operators, conditional statements, functions, loops, assignment statements, and more. You will then move onto more advanced topics such as classes and inheritance, iterators, list comprehensions, and dictionaries. Along with this, you will also get to explore the concept of testing and take a look at how GUI applications can be designed using Tkinter, Python's standard GUI library. 

By the time you're done, you'll be able to hit the ground running and be equipped with the tools that will allow you to be productive in Python.

Python 3: From Beginner to Advanced

 ## Introduction to subclasses

A class inherits all the instance variables and methods of its superclass. (It is a **subclass** of its superclass.) For example:

```python
class Friend(Person):
  def smile(self):
    print('¯\_(^-^)_/¯')

meg = Friend('Margaret', 25)
```

In the above example, when you create `meg` as an instance of `Friend`, `meg` will have the `say_hi`, `get_older`, and `get_much_older` methods of the `Person` class, along with the `smile` method and the `__init__ constructor`. Since the constructor is inherited, you can use the same arguments to create a `Friend` that you can use to create a `Person`, as you can see in both the examples above and below:

```python
meg = Friend('Margaret', 19)
```

Check out the example below: 

You'll learn about the concept of subclasses in Python in this lesson.

Introduction

The Absolute Bare Minimum

Better Tools

Classes

Getting Fancy

Testing

Graphical User Interfaces

Modules

Appendix

I Guess We're Doing Python Now Exam

Subclasses

Introduction to subclasses