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)
2
Part I: Getting to Know Python
10
PART II: Algorithms and Circuits
14
PART III: Advanced Features and Libraries
19
References
20
Other Books You May Enjoy
Appendices
Appendix C: The Complete UniPoly Class
Appendix D: The Complete Guitar Class Hierarchy
Appendix F: Production Notes

8.5 Names and locations

If you wish to change the name of a directory, call rename.

os.rename("recipes/cookies", "recipes/moms-cookies")
os.rename("recipes", "moms-recipes")

We can also rename files. The file stays in the same directory but has a new name.

os.rename("test.py", "chapter-test.py")

os.rename("recipes/cookies/shortbread.docx",
          "recipes/cookies/moms-shortbread.docx")

To make a copy of a file’s contents, you can duplicate it using a new name in its current or another directory, or use its current name in a different directory. The shutil module provides several functions to copy files. They take the same arguments.

import shutil

shutil.copyfile("t.py", "test-01.py")      # same dir, new name
'test-01.py'
shutil.copy("t.py", "/tests")              # different...