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

13.5 Scatter plots

We use a scatter plot to display many points. After doing that, we make it fancy with colors, markers, labels, titles, and fonts and adjust the axes so the plot conveys your data effectively and pleasantly.

Like pie, we control most of the look of a scatter plot via keyword arguments to scatter. The data for the plots is the high temperatures for three cities—A, B, and C—over the first ten days of March 2021. The temperatures are in Fahrenheit, and I use numpy arrays to hold the numeric days of the month and the data.

If I merge the data into single arrays for the days and temperatures via the numpy concatenate function, scatter shows all points in the same color with the same marker. The default color is blue.

import matplotlib.pyplot as plt
import numpy as np

days = np.arange(1, 11)

city_high_temperatures = {
    'A': np.array([63, 57, 59, 67, 54...