Python for Secret Agents

Creating Python modules and applications

We relied heavily on modules in the Python library. Additionally, we added several packages, including Pillow and BeautifulSoup. The question should arise, can we create our own module?

The answer is, of course, yes. A Python module is simply a file. It turns out that each example script has been a module. We can look a little more deeply at how we can make our own modules of reusable programming. When we look at Python programs, we observe three kinds of files:

• Library modules that are purely definitional
• Application modules that do the real work of our applications
• Hybrid modules that are both applications and can be used as libraries

The essential ingredient of creating a Python module is separating the ...