Modular Programming with Python

Wrappers

A wrapper is essentially a group of functions that call other functions to do the work:

Wrappers are used to simplify an interface, to make a confusing or badly designed API easier to use, to convert data formats into something more convenient, and to implement cross-language compatibility. Wrappers are also sometimes used to add testing and error-checking code to an existing API.

Let's take a look at a real-world application of a wrapper module. Imagine that you work for a large bank and have been asked to write a program to analyze fund transfers to help identify possible fraud. Your program receives information, in real time, about every ...