Book Image

Dancing with Python

By : Robert S. Sutor
Book Image

Dancing with Python

By: Robert S. Sutor

Overview of this book

Dancing with Python helps you learn Python and quantum computing in a practical way. It will help you explore how to work with numbers, strings, collections, iterators, and files. The book goes beyond functions and classes and teaches you to use Python and Qiskit to create gates and circuits for classical and quantum computing. Learn how quantum extends traditional techniques using the Grover Search Algorithm and the code that implements it. Dive into some advanced and widely used applications of Python and revisit strings with more sophisticated tools, such as regular expressions and basic natural language processing (NLP). The final chapters introduce you to data analysis, visualizations, and supervised and unsupervised machine learning. By the end of the book, you will be proficient in programming the latest and most powerful quantum computers, the Pythonic way.
Table of Contents (29 chapters)
Part I: Getting to Know Python
PART II: Algorithms and Circuits
PART III: Advanced Features and Libraries
Other Books You May Enjoy
Appendix C: The Complete UniPoly Class
Appendix D: The Complete Guitar Class Hierarchy
Appendix F: Production Notes

10.5 Defining and using decorators

We’ve used Python decorators several times so far, but it’s time we learned how to code them ourselves. We saw the decorators

  • @abstractmethod in section 7.13.2 to indicate a method from an abstract base class that coders must override
  • @classmethod and @staticmethod in section 7.12 to define class and static methods
  • @property in section 7.5 to define properties from parameter-less class instance methods

Here’s the core idea with decorators: given a function my_function, I want to wrap it with additional code that calls my_function. I’m decorating the outside of my_function with extra capability. For extra credit, I want to use my_function to access my original code with the new decorations.

I’ll begin with a simple function that prints 100.

def one_hundred...