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Modular Programming with Python

You're reading from   Modular Programming with Python Introducing modular techniques for building sophisticated programs using Python

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Product type Paperback
Published in May 2016
Publisher Packt
ISBN-13 9781785884481
Length 246 pages
Edition 1st Edition
Languages
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Author (1):
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Erik Westra Erik Westra
Author Profile Icon Erik Westra
Erik Westra
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Table of Contents (11) Chapters Close

Preface 1. Introducing Modular Programming 2. Writing Your First Modular Program FREE CHAPTER 3. Using Modules and Packages 4. Using Modules for Real-World Programming 5. Working with Module Patterns 6. Creating Reusable Modules 7. Advanced Module Techniques 8. Testing and Deploying Modules 9. Modular Programming as a Foundation for Good Programming Technique Index

Testing our reusable package


Now that we've written the code (or alternatively, downloaded it), let's take a look at how this package works. In a terminal window, set the current directory to the folder containing your quantities package directory, and type python to start the Python interpreter. Then, type the following:

>>> import quantities

If you haven't made any mistakes in typing in the source code, the interpreter should come back without any errors. If you have made any typos, you'll need to fix them before you can proceed.

Next, we have to initialize our quantities package by supplying the locale we want to use:

>>> quantities.init("international")

If you are in the United States, feel free to replace the value international with us so that you get localized spelling and units for your country.

Let's create a simple quantity, and then ask the Python interpreter to display it:

>>> q = quantities.new(24, "km")
>>>> print(q)
24 kilometre

As you can...

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