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
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Appendix C: The Complete UniPoly Class
Appendix D: The Complete Guitar Class Hierarchy
Appendix F: Production Notes

2.2 Strings

We use strings for text. They are a sequence of characters.

'Better a witty fool, than a foolish wit.'
'Better a witty fool, than a foolish wit.'

If I am manipulating the text of Shakespeare’s Twelfth Night, I can represent it this way. I delimited the string at its beginning and end with single quotes. Notice that Python displayed single quotes in its output. You may use either single or double quotes as delimiters; they are not part of the data representing the string and its contained characters.

"Some are born great, others achieve greatness."
'Some are born great, others achieve greatness.'

If you want to create a string that includes a single quote, use double quotes as the delimiters. Reverse this if your string includes a double quote. If I can use either, my convention is to use single quotes for strings of length one (for example...