Practical Data Wrangling

Modules in Python

A Python module is a set of already made code that can be included in a program to add on extra functionality.

Built-in modules are modules that come with most Python installations. They are generally available without any additional installation or setup.

Other modules, called external modules, are built and maintained by businesses and by the open source community and can be installed separately. I will be using a few external modules in later chapters.

A module is included in a particular program using an import statement as follows:

import <name_of_module>

If the module is a built-in module (or an external module that has been installed properly), the import statement will load in all of the code for the named module. ...