Book Image

The Python Workshop

By : Olivier Pons, Andrew Bird, Dr. Lau Cher Han, Mario Corchero Jiménez, Graham Lee, Corey Wade
Book Image

The Python Workshop

By: Olivier Pons, Andrew Bird, Dr. Lau Cher Han, Mario Corchero Jiménez, Graham Lee, Corey Wade

Overview of this book

Have you always wanted to learn Python, but never quite known how to start? More applications than we realize are being developed using Python because it is easy to learn, read, and write. You can now start learning the language quickly and effectively with the help of this interactive tutorial. The Python Workshop starts by showing you how to correctly apply Python syntax to write simple programs, and how to use appropriate Python structures to store and retrieve data. You'll see how to handle files, deal with errors, and use classes and methods to write concise, reusable, and efficient code. As you advance, you'll understand how to use the standard library, debug code to troubleshoot problems, and write unit tests to validate application behavior. You'll gain insights into using the pandas and NumPy libraries for analyzing data, and the graphical libraries of Matplotlib and Seaborn to create impactful data visualizations. By focusing on entry-level data science, you'll build your practical Python skills in a way that mirrors real-world development. Finally, you'll discover the key steps in building and using simple machine learning algorithms. By the end of this Python book, you'll have the knowledge, skills and confidence to creatively tackle your own ambitious projects with Python.
Table of Contents (13 chapters)

8. Software Development

Activity 22: Debugging Sample Python Code for an Application

Solution:

  1. First, you need to copy the source code, as demonstrated in the following code snippet:
    DEFAULT_INITIAL_BASKET = ["orange", "apple"]
    def create_picnic_basket(healthy, hungry,   initial_basket=DEFAULT_INITIAL_BASKET):
        basket = initial_basket
        if healthy:
            basket.append("strawberry")
        else:
            basket.append("jam")
        if hungry:
            basket.append("sandwich")
        return basket

    For the first step, the code creates a list of food that is based on an initial list that can be passed as an argument. There are then some flags that control what gets added. When healthy is true, a strawberry...