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

What conventions do I use in this book?

This book uses version 3.9 of Python or later. Most of the features are available in earlier versions of Python 3, but we do not show nor further mention the now-unsupported Python 2.

Executable Python code and its produced results are shown in a monospace font and are marked off in the text in the following way:


The second expression shown is indented and is the result of running the code.

Code can also span several lines as in this example where we create and display a set of numbers that contains no duplicates:

print({1, 2, 3, 2, 4,
       1, 5, 3, 6, 7,
       1, 3, 8, 2})
{1, 2, 3, 4, 5, 6, 7, 8}

For long function, method, and class definitions, I number the lines so I can refer to them more easily in the text. The numbers are not part of the Python input, and you should not enter them if you type in the code.

def display_string(the_string, put_in_uppercase=False):
    if put_in_uppercase:

When I refer to Python function, method, and property names in text, they appear like this: print, __add__, and left. Example Python type and class names in the text are int, Fraction, and Guitar. Python module and package names appear like math, os.path, and qiskit.

This book has exercises throughout the text. Work them out as you encounter them before proceeding.

Exercise 0.1

Is this a sample exercise?

The exercises are numbered within chapters.

Exercise 0.2

Is this another sample exercise?

Due to some typographical restrictions, square roots in mathematical expressions within sentences may not have lines over them. For example, an expression like √(x + y) in a sentence is the same as

Typography of square root

when it appears within a standalone centered formula.

Occasionally, you may see something like [DWQ] or [DWQ, Section 3.5]. This is a reference to a book, article, or web content. The References section provides details about the works cited.

Dancing with Qubits covers the mathematics for and of quantum computing in great detail. That book is not a prerequisite to this, but I point you to sections in Qubits that pertain to any related material here for your convenience. For example: