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

7.15 Generators

Closely related to an iterator is the Python concept of a generator. A generator g is a special function with this behavior:

  • The first time you call g, it initializes itself, passes back a value, and freezes its state.
  • The next time you call g, it continues processing until it passes back a value and then freezes its state again.
  • These actions continue until the function terminates, and then it returns no additional values.

We use yield to tell Python to pass back a value and freeze everything until the next call to the generator.

def create_odd_number_generator():
    n = 1
    while True:
        yield n
        n += 2
odd_number_generator = create_odd_number_generator()
<generator object create_odd_number_generator at 0x0000024A93102660>