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

3.1 The big three

In section 2.3, I informally introduced lists. These are objects of type list and can contain items of any type. We access them via an int index. They are mutable and in a defined order. In Figure 3.1, the list on the left contains six items, two of which are duplicates.

List, dictionary, and set collections
Figure 3.1: List, dictionary, and set collections

A dictionary is an object of type dict. A dictionary has a set of unique keys that are associated with data values. The collection is mutable, but the keys are not, and so are often numbers or strings. In the middle of Figure 3.1, the four unique names are the keys pointing to data values.

Suppose you belong to a local library and have a library card number to check out books. That number is unique to you, but can be used by the library staff to find your name and phone number. We can use a dict to implement this.

A set...