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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 iterators

An **iterable object** is any object that can be stepped through. Iterable objects include lists, sets, tuples, strings, dictionaries, ranges, and files. An **iterator** is an object that implements a method for stepping through the elements of an iterable. 

For example, you can get a **list iterator** by saying `it = iter([2, 3, 5])`. You can step through the elements of this list by repeatedly calling `next(it)`. This will return **2**, then **3**, and then **5**. Yet another call to `next(it)` will raise a `StopIteration` exception.

# Introduction to iterators

An **iterable object** is any object that can be stepped through. Iterable objects include lists, sets, tuples, strings, dictionaries, ranges, and files. An **iterator** is an object that implements a method for stepping through the elements of an iterable. 

For example, you can get a **list iterator** by saying `it = iter([2, 3, 5])`. You can step through the elements of this list by repeatedly calling `next(it)`. This will return **2**, then **3**, and then **5**. Yet another call to `next(it)` will raise a `StopIteration` exception.

Learn about the concept of iterators in Python. 

Introduction

The Absolute Bare Minimum

Better Tools

Classes

Getting Fancy

Testing

Graphical User Interfaces

Modules

Appendix

I Guess We're Doing Python Now Exam

Iterators

Introduction to iterators