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

12.1 Core string search and replace methods

This section lists the primary str methods for finding and replacing substrings. Though we discussed several of these in Chapter 4, Stringing You Along, it is helpful to have their descriptions together before discussing more advanced regular expression functions.

In each of the following methods that includes optional arguments start=0 and end=len(string), the search is within the substring given by the slice coordinates start:end.

substring in string

Returns True if substring is in string, and False otherwise. See section 4.2.

"z Fe" in "Franz Ferdinand"

substring not in string

Returns True if substring is not in string, and False otherwise. See section 4.2.

"Ferd" not in "Franz Ferdinand"

string.count(substring, start=0, end=len(string))

Returns the number of times that...